Sunday, March 27, 2011

Rangkaian pre amp sepul gitar

This is a pre-amp guitar circuit suitable for high impedance type electric guitar pickups. The circuit is based on a uA 741 op-amp (IC1). The IC1 is wired as a non-inverting amplifier. Resistor Variable R1 can be used as a volume controller. Resistor Variable R6 can be used as tone controller. The switch S1 is used to produce “brilliant” or “soft” tonal effects.

Pre-Amp Sepul Gitar
Skema rangkaian Pre-Amp sepul gitar

Guitar Effect Fat Cat Distortion Pedal

circuit of Fat Cat Distortion pedal Distortion is good for blues, rock, pop and alternative. by using this circuit You can hear the fat tone, even at maximum overdrive.

The transistor 2SC1815/BC546 is configured as voltage follower, giving a high impedance for the input. The op-amp serve an adjustable gain amplifier, to boost the signal until it reach the forward bias voltage (about 0.7 volts) of 1N4148 diodes, where the signal is clipped.

rangkaian fat cat distortion pedal Skema Rangkaian Fat Cat Distortion Pedal for guitar

60 Watt uitar Amplifier + Tone Controll

Rangkaian Guitar Amplifier + Tone Control

The following is a circuit of amplifiers are equipped with the appropriate regulatory tone in use to strengthen the electric guitar, using a single-rail supply of about 60V and capacitor-coupling for the speaker . The advantages for a guitar amplifier are the very simple circuitry, even for comparatively high power outputs, and a certain built-in degree of loudspeaker protection, due to capacitor C8, preventing the voltage supply to be conveyed into loudspeakers in case of output transistors' failure.

Rangkaian Guitar Amplifier + Tone ControlSkema Rangkaian Guitar Amplifier + Tone Control
In all cases where Darlington transistors are used as the output devices it is essential that the sensing transistor (Q2) should be in as close thermal contact with the output transistors as possible. Therefore a TO126-case transistor type was chosen for easy bolting on the heatsink, very close to the output pair

R30 must be trimmed in order to measure about half the voltage supply across the positive lead of C7 and ground. A better setting can be done using an oscilloscope, in order to obtain a symmetrical clipping of the output wave form at maximum output power

Note:
To set quiescent current, tide ampare meter in series between supplay with this series, then do the following
  • Set the volume control to the minimum and Trimmer R3 to its minimum resistance.
  • Power-on the circuit and adjust R3 to read a current drawing of about 30 to 35mA.
  • Wait about 15 minutes, watch if the current is varying and readjust if necessary.
List component

R1,R2______________68K 1/4W Resistors
R3________________680K 1/4W Resistor
R4________________220K 1/4W Resistor
R5_________________33K 1/4W Resistor
R6,R16______________2K2 1/4W Resistors
R7__________________5K6 1/4W Resistor
R8,R21____________330R 1/4W Resistors
R9_________________47K 1/4W Resistor
R10_______________470R 1/4W Resistor
R11_________________4K7 1/4W Resistor
R12,R20____________10K 1/4W Resistors
R13_______________100R 1/4W Resistor
R14,R15____________47R 1/4W Resistors
R17,R18,R19_______100K 1/4W Resistors
R22__________________6K8 1W Resistor
R23,R25_____________470R 1/4W Resistors
R24__________________2K 1/2W Trimmer Cermet
R26,R27_______________4K7 1/2W Resistors
R28________________220R 1/2W Resistor
R29__________________2K2 1/2W Resistor
R30_________________50K 1/2W Trimmer Cermet
R31________________68K 1/4W Resistor
R32,R33______________R47 4W Wirewound Resistors


C1,C4,C5,C6________10µF 63V Electrolytic Capacitors
C2_________________47µF 63V Electrolytic Capacitor
C3_________________47pF 63V Ceramic Capacitor
C7_________________15nF 63V Polyester Capacitor
C8_________________22nF 63V Polyester Capacitor
C9________________470nF 63V Polyester Capacitor
C10,C11,C12________10µF 63V Electrolytic Capacitors
C13_______________220µF 63V Electrolytic Capacitor
C14,C15,C17,C18________47µF 63V Electrolytic Capacitors
C16________________100µF 25V Electrolytic Capacitor
C19_________________33pF 63V Ceramic Capacitor
C20_______________1000µF 50V Electrolytic Capacitor

P1,P2______________10K   Potentiometers
P3_________________10K   Potentiometer

D1,D2____________BAT46   100V 150mA Schottky-barrier Diodes
D3_________________LED

Q1,Q3____________BC546    NPN Transistors
Q2_______________BC556    PNP Transistor
Q4,Q5____________BD139    80V 1.5A NPN Transistors
Q6_____________MJ11016   120V 30A NPN Darlington Transistor
Q7_____________MJ11015   120V 30A PNP Darlington Transistor

J1,J2___________6.3mm. Mono Jack sockets
SW1,SW2___________SPST Switches
SPKR______________speakers  8 or 4 Ohm with Minimum power 75W

Rangkaian effect Guitar sederhana

For you who like to assemble their own or following electronic love is one of a series of simple Treble Booster

Treble Booster seldom used by guitarists, and if the only digunakanpun final choice, but there are also still likes the sound of guitar effects "Treble Booster" Screaming Bird Treble Booster was first introduced by the Electro-Harmonix was the era when 70 -- the company is producing guitar effects Screaming Bird Treble Booster. And in this current era of emerging many similar effects in treble booster which sell in the market, either a modified or an almost similar to the original sound.

rangkaian efek gitarSkema rangkaian efek gitar

Transistor 2n5133 is difficult to find in the market, these transistors are short data


Various
Si NPN Lo-Pwr BJT
V(BR)CEO (V)=18
V(BR)CBO (V)=20
I(C) Abs.(A) Collector Current=50m
Absolute Max. Power Diss. (W)=200m
I(CBO) Max. (A)=.05u
f(T) Min. (Hz) Transition Freq=40M
Package=TO-106
Military=N

if you are difficult to obtain these transistors use the following, may be an equivalent for this part but Please review the transistor datasheet for more details.

BC183
BC548
2N5172
KT315A
BC168
BC238
2N4967
BC209
2SC536

Simple sound effect Generator Circuit- UM3561

This is a very simple. The IC UM3561 produces four differen sound effects, the output at Pin 3 being amplified by the transistor 2N2222. A 64 ohm loudspeaker can be substituted in place of the 56 ohm resistor and 8 ohm loudspeaker.

Sound Effects Generator circuitSkema Rangkaian Sound Effects Generator

The 2 pole 4 way switch controls the sound effects. Position 1 (as drawn) being a Police siren, position 2 is a fire engine sound, 3 is an ambulance and position 4 is a machine gun effect.

Note:
The IC sound generator UM3561 is now available in a kt from Maplin Electronics. Click here for the link.

Bentuk box speaker yang baik

In addition to Volume speaker kotak|box, box shape also affect the sound in the generate. To get a box the size of the speakers can be read here.

form of box speakers (Bentuk Box) in the book actually does not have a written rule., But from some research done by the experts, form the most easily made with the results of which are quite good in terms of four and the worst in the form of a cube which is the size of all high, kedalamannya width and the same.

In addition to form, the use of bracing on the inside of the box is also highly recommended. Bracing as the brace is working out of the box as a deterrent and the occurrence of vertical waves (standing waves) that can disrupt the sound generated by the speaker. Vertical waves this can be overcome with the use of bracing and the use of glass wool reducer such as foam or the many available in the shops that sell electronic components. Installation glass wool should be thick on the walls in each box except the front wall of the reducer does not need to be coated. Too much of the reducer can be adjusted with any taste. If the bass sound produced is too hard, so should be added peredamnya but if sound basnya too teredam or even nearly lost, the need to reduced.

Grafik untuk menentukan ukuran box speaker

The problems that often appear when you want to make a speaker box set itself is large so that the required optimal results? When the box is too large, then the low tones produced less power, but if it feels too small voices will explode feel-ledak low frequency response and the resulting reduced. In short, either too large or too small so low a tone you would expect we will not be generated properly. Akan problems but most of the other speakers in the local market does not have nearly the complete list with the specification. Usually only the size of the diameter, Impedance nominal and maximum power, such as 12 ", 8 Ohm, 400 watts. That's it.

Based on a book publication that includes techniques to create speaker closed with a conventional way using only standard diameter speaker. In the book charts given volume needed by the speaker based on the diameter of a closed box speakers are as follows:

Rangkaian relay penunda speaker

The following is a series of speakers delay relay useful as a delaying the speakers. The purpose of this delay circuit is as a deterrent to prevent pounding of the very first amplifier is turned on.
This delay circuit has the advantage that is: if there konsleting, relationship with the speaker amplifier circuit will be immediately cut off, so that the speaker is safe from fire. waiting time or delay time is about 5 seconds, and can be altered by changing the condenser C2 with elco smaller value. The time needed to re-open relay if the current cut off about 0.5 seconds.

Friday, March 25, 2011

Rangkaian speaker protector sederhana

This circuit follows will connects the speakers to the power amplifier output only a few seconds after the amplifier is powered ON, so that the speakers do not accept popped up by a high voltage and you would not Hear a loud thud sound from the speakers When the amplifier is switched on. This stuff is very harmful to the speakers.

Rangkaian Speaker Protector sederhanaSkema rangkaian speaker protector

Power meter schematic for audio amplifier

This is a simple schematic of audio power meter using LM3915 IC, this schematic can be used to measure the actual output power of your amplifier. For an audio engineer, this schematic Seems to be very helpful, especially for checking of sound system installation and field testing. Due to its logarithmic scale, the wide range of audio output with only ten scales cans Also be measured. If you take an attention to the pin number 5 of the LM3915, see That you will from the input is not yet Rectified. At this input pin, the negative swing will from the present. However, it is harmless since the current is limited by R1, the LM3915 earnest therefore respond only to positive cycle.

Wednesday, March 23, 2011

Mobile phone Battery charger circuit

This Mobile phone chargers circuit presented here comes as a low-cost alternative to charge mobile telephones/battery packs.

Mobile Phone Battery Charger CircuitCircuit of Mobile Phone Battery Charger

Tuesday, March 22, 2011

Rangkaian charge monitor for 12V Battery

This circuit project is a function for monitoring the charge level of 12 volt batteries continuously. The circuit possesses two vital features:

  1. reduces the requirement of human attention by about 85%.
  2. highly accurate and sophisticated methods.
A battery is a vital element of any battery-backed system. In many cases the battery is more expensive than the systems it is backing up. We need to Adopt Hence all practical measures to Conserve battery life.

As per manufacturer's data sheets, a 12V rechargeable battery operated Should be within 10. IV and 13.8V. When the battery charges higher than 13.8V it is said to be overcharged, and it discharges below 10.IV Pls Can it be Deeply discharged. A single event of overcharge or deep discharge Can bring down the charge-holding capacity of a battery by 15 to 20%.

Charge Battery 12 volt

Skema rangkaian Battery Charge designed as a constant voltage source with a negative temperature coefficient. Transistor Q1 (BD 140) is used as the temperature sensor. transistor Q2 is used to prevent the battery from discharging through R1 when the mains power is not available. Rangkaian Battery Charge is designed based on the voltage regulator IC LM350. The output voltage of the charger can be adjusted between 13-15 V by varying the POT R6.

Battery Charge

Gambar Skema Rangkaian Charge Battery 12 Volt

Rangkaian chaeger aki 6V

Here is the circuit diagram of a low cost charger for 6 volt batteries. This circuit requires a regulated 10V-DC front end capable of supplying 2 Amps. Begins the charge period at 240mA and at full charge switches automatically to a float condition of 12mA. The capacitors should be the electrolytic 25V or greater.
Rangkaian Charger aki 6 VoltSkema Rangkaian Charger aki 6 Volt

Friday, March 18, 2011

Battery indicator

In this part of the investigation in a circuit of battery indicators , this is arise such alarm sound or light up when the battery already weak, so that needs to be replaced or re-charge.



Circuit of Battery indicator


Note:
voltage used is 12 volt
Low voltage warning flow: 15 mA
Alarm tone can be changed with the R7.


Tips Merawat Battery basah
  • Keep the electrolyte in the battery between the lower level and upper level lines. Check it at least once a month.
  • Short of electrolyte will cause sulfation to the elements and reduce the battery's performance in generating electricity flow.
  • Use distilled/demineralized water only for battery filling. Avoid using tap/well/mineral water as they may contain metal ions or organic substances that lower the battery's performance and its life.
  • Clean the battery's surface and keep from any electrolyte spill.
  • Clean the terminal surface using a little grease/lubrication to prevent from oxidation or fungus.
  • Do not connect the positive and negative terminal using a piece of wire as this will damage/terminate the connection between the terminals and elements.
  • Make sure the wire connection to the terminals is tight enough. Loose connection causes sparks, it may cause the battery explodes.
  • Cover the positive terminal's surface using isolator (plastic/rubber) to avoid short circuit to the vehicles body.
  • Cover the battery's surface with plastic/rubber sheet to protect it from dust/dirt blocking the vent holes.
  • Check the vent holes periodically. Blocked vent holes may cause the battery expand and eventually will cause explosion or leakage.


Tips Recharge a battery
Quick-charge recharging.
  • Make sure the charger is at OFF position
  • Attach the clips (red + and black -)
  • Connect the charger to the electricity point
  • Set the timer
  • Set the recharging flow (maximal equivalent to the battery's normal capacity).
  • These steps apply only to an emergency condition.

Normal recharging.
  • Make sure the charger is at OFF position
  • Attach the clips (red + and black -)
  • Connect the battery in parallel fashion
  • The recharge flow is selected for a battery with small capacity
  • Recharge flow volume is 1/10 of normal capacity
  • Recharge time: 3 times constant voltage.

After recharging is completed.
  • Turn off the charger
  • Release the clips on the battery
  • Release the wire from the electricity point.

Rangkaian suara burung

his generate a sound like bird’s circuit. The trafo LT700 is a small audio transformer with primary is center tapped with an impedance of 1Kohms at 1KHz . The secondary has an impedance of 8 ohms.


 Pembangkit Suara BurungSkema rangkaian pembangkit suara burung

The inclusion of R1 and C1 give this oscillator its characteristic “chirp”. As the 100u capacitor charges via the 4.7K resistor, R1 the bias for the transistor is cut off. This causes the oscillation to stop, the capacitor discharges through the base emitter circuit of the transistor and oscillations start again. Altering these components alters the frequency of the chirp. The chirp is also voltage dependent. When the push button switch is operated the 100u capacitor is charged. When its released, the oscillation decays and the chirp becomes faster.


Transistor BC177 description

NPN transistor in a TO-18; SOT18 metal package. PNP complement: BC177.

Data reverence Transistor BC177
  • VCBO/ collector-base voltage open emitter: 30 V
  • VCEO/ collector-emitter voltage open base: 20 V
  • VEBO/ emitter-base voltage: 5 V
  • ICM/ peak collector current - 200 mA
  • Ptot/ total power dissipation Tamb £ 25 °C - 300 mW
  • hFE DC current gain IC = 2 mA; VCE = 5 V: min 200 max 800
  • fT transition frequency IC = 10 mA; VCE = 5 V; f = 100 MHz: min 100 MHz
  • Tstg/ storage temperature: Min -65 max +150 °C
  • Tj/ junction temperature max 175 °C
  • Tamb/ operating ambient temperature min -65 max +150 °C

LT700 Tranformer is a small audio transformer with primary is center tapped with an impedance of 1Kohms at 1KHz . The secondary has an impedance of 8 ohms.





Rangkaian bel rumah (ding dong)

This simple circuit an low cost ding dong bell suitable for calling bell purposes. It is made around IC 8021-2 . IC 8021 has an in-built circuitry to produce ding dong sound each time its pin 3 is pulled low. The sound is stored in a 4 bit ROM.a complementary-pair, two-transistor amplifier is used to amplify the sound to a fair level of audibility. A piezo tweeter or an 8-ohm, 500mW speaker can be used at the output.

Ding dong bel Rumah
Skema Rangkaian bel Rumah
List Component bel Rumah:
R1: 1K 1/4W Resistance
C1: 10µF/12-25V Electrolytic Capacitance
T1: BC548/c8050 NPN transistor
T2: BC557/C8550 PNP transistor
IC1: 8021-2 ding dong sound generator
Ls1: Speaker tweeter 500 Mwatt - 5 watt
S1: switch on/off
S2: Switch Normally close
B1: 3V Cell
Each time when switch S2 is pressed, ding dong sound is produced twice. If you try to press switch S2 a second time when the first ding dong sound is still being produed, it has no effect whatever and the two ding-dong bell sounds will be invariably produced.S1 is the ON- OFF switch.Assemble the circuit on a good quality all pupose PCB.Don’t forget to use an IC holder for IC 8021.
IC 8021 Description
The 8021-2 is a ding-dong sound effect generator IC produced by LSI CMOS technology. With built-in RC oscillator and digital envelope circuits, minimal external components are required. This IC simulates the mechanical ding-dong sound, and is ideal for door bell application.
IC 8021 Features
- 1.3V to 3.3V operating voltage and low power consumption
- One-shot mode of 2 ding-dong playing sequences
- Standard TO-92 package form
- Dynamic speaker can be driven with external NPN transistor

IC 8021 Absolute Maximum Ratings
DC Supply Voltage ........................................... -0.3V to +5.0V
Operating Ambient Temperature .................... -10°C to 60°C
Storage Temperature ....................................... -55°C to 125°C

Rangkaian alarm LDR anti maling

Anti-theft alarm circuit it produces an audible alarm when fridge is left open for a preset time.Rangkaian This versatile alarm is based on two 555 timer IC's. Both ICS are wired as astable Multivibrators.An LDR is connected in parallel to the timing capacitor
C1 of IC 1.When is completely close door there will be no light inside the fridge and offers high resistance LDR R1 keeping fully charged.When door is left open, the lamp inside the fridge will remain glown, LDR will be illuminated, and its falls.This resistance makes
C1 stops charging and starts to discharge (In simple words, this is because at low resistance LDR bye passes much of the current in the parrallel path and capacitor gets less current). Now IC 1 starts oscillating slightly and after a preset time of 25 ( time T1) seconds high.This its output goes out put makes the Ic 2 to produce oscillations and results in a beeping sound for next 20 (time T2) seconds and cycle is repeated till door is closed.

 Alarm LDR  anti maling
Skema Rangkaian Alarm anti maling


List Component alarm anti maling:
R1: 10K 1/4W Resistance
R3: 2.2 M 1/4W Resistance
R4: 1M 1/4W Resistance
C1: 10µF/25V Electrolytic Capacitance
C2: 100nF/63V Polyester Capacitance
D1: 1N4001 Diode
IC1,IC2: NE 555 Timer ICs
BZ1: Piezo Buzzer
B1: 3V Cell

Note:
Assemble the circuit on a good quality PCB .Time T1 & T2 can be adjusted by varying C1, C2, R1, R4 etc (Refer data sheet of 555). Place the LDR close enough to the lamp inside the fridge.

IC 555 Pin No Designation Description

 IC 555
  1. Ground, is the input pin of the source of the negative DC voltage
  2. Trigger, negative input from the lower comparators (comparator B) that maintain oscillation capacitor voltage in the lowest 1 / 3 Vcc and set RS flip-flop
  3. Output, the output pin of the IC 555.
  4. Reset, the pin that serves to reset the latch inside the IC to be influential to reset the IC work. This pin is connected to a PNP-type transistor gate, so the transistor will be active if given a logic low. Normally this pin is connected directly to Vcc to prevent reset
  5. Control voltage, this pin serves to regulate the stability of the reference voltage negative input (comparator A). This pin can be left hanging, but to ensure the stability of the reference comparator A, usually associated with a capacitor of about 10nF to berorde pin groun
  6. Threshold, this pin is connected to the positive input (comparator A) which will reset the RS flip-flop when the voltage on the capacitor from exceeding 2 / 3 Vc
  7. Discharge, this pin is connected to an open collector transistor Q1 is connected to ground emitternya. Switching transistor serves to clamp the corresponding node to ground on the timing of certain
  8. Vcc, pin it to receive a DC voltage supply. Usually will work optimally if given a 5-15V. the current supply can be seen in the datasheet, which is about 10-15mA.

Wednesday, March 16, 2011

Rangkaian pembangkit musik

Circuit of musik melody generator you can make using an IC.The UM66 series are CMOS IC’s designed for using in calling bell, phone and toys. It has a built in ROM programmed for playing music. The device has very low power consumption.Thanks for the CMOS technology.The melody will be available at pin3 of UM66 and here it is amplified by using transistor Q1 dan Q2 to drive the speaker.

Rangkaian alarm pendeteksi api menggunakan LDR

In the rooms are vulnerable to fire, such as a storage material flammable, required a system of prevention of the occurrence of fire. For example, using a fire alarm, so that eg arise if a flame, can be quickly and by others that can immediately fire it does not cause a fire is greater.

Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke produced during fire.The circuit produces an audible alarm when the fire breaks out with smoke.

Fire alarm circuit
Skema rangkaian alarm pendeteksi api kebakaran

Skema rangkaian sirine polisi

Rangkaian sirine police will produce sound that is almost similar to the sirens and the police can plug in the car or motorcycle. Rangkaina consists of 2 pieces IC NE 555 that serves as the frequency (multivibrator astable) that the frequency can be set to play Vr1 and Vr2.

Skema Rangkaian Sirene Polisi
Gamabar Skema Rangkaian Sirine Polisi

Simple circuit of elektronic buzzer

rangkaian buzzer
Gbr. Skema Rangkaian Elektronic buzzer


Simple Electronic buzzer series is a series that only use 2 resistor, 3 capacitor , NE555 Chip, switch, and speaker. string up series of simple electronic buzzer is also very easy and simple. IC NE555 is the frequency of 1 kHz when the switch is pressed. This frequency can be set using the potensiometer 10 KOhm. Picture a series of simple electronic buzzer can be seen above:

Friday, March 11, 2011

Switch antenna/jumper hanphone

Masalah sinyal yang tidak stabil terkadang bisa memusingkan kita tatkala sedang membutuhkan fungsi ponsel untuk melakukan panggilan yang terhitung penting. Masalah sinyal sebenarnya disebabkan oleh 2 hal yakni, kualitas sinyal dari BTS operator yang lemah dan kondisi ponsel itu sendiri yang memang memiliki masalah di dalamnya. Jika pancaran sinyal BTS memang tidak memiliki masalah sama sekali maka bisa dipastikan, masalah yang terjadi disebabkan oleh ponsel.
Ponsel yang bermasalah dengan sinyal juga memiliki 2 kemungkinan. Masalah yang bersalah dari software atau hardware. Langkah pertama yang harus dilakukan adalah melakukan perbaikan software dengan tuning signal. Jika setelah melakukan tuning signal masih saja meiliki masalah, maka langkah terakhir adalah melakukan pergantian pada komponen switch antena, IC RF, PA, Audio dan masih banyak lagi yang berhubungan dengan lemahnya sinyal ponsel.

Cara menentukan nilai resistor pada LED

How to choose a resistor to turn on the LED? Why LEDs need resistors? That's because the LED does not have a current regulator, the LED will burn out if no resistor.

The amount of flow determines how bright an LED. Greater flow of the lighter flame of an LED. Current in the LED should be approximately 10-20 mA. When a current passes through a LED, the LED voltage drop of about 1.85 V or depending on the type of LED that is in use

Menghitung resistor LED Putih

LED (light emitting diode) is currently being widely used, among other things, traffic signal lights and indicator lights of the vehicle. Efisasi value (lumens per watt) LED increasingly make this light source is used widely in the field of lighting.

LED Super Bright Nyala PutihSuper bright white LED pic

Wednesday, March 2, 2011

Power suplay

12 volt dual voltage of adapter


  • Transformator 18v-CT (min)
  • Capasitor 35v
  • Bridge Rectifier 2 Ampere /100 v
  • c4, c5 Ceramic

Rangkaian teks / huruf berjalan

This is a running message display circuit wherein the letters formed by the LED arrangement light up progressively. Once all the letters of the message have been lit up, the circuit gets reset.

The circuit is built CD4017BC counter menggukan decades. One of the CD4017BE's features is its provision of ten fully Decoded outputs, making the IC ideal for use in a whole range of sequencing operations. In the circuit only one of the outputs remains high and the other outputs switch to high state successively on the arrival of each clock pulse. The timer NE555 is wired as a 1HZ astable multivibrator which clocks the IC2 for sequencing operations. On reset, output pin 3 goes high and drives transistor T7 to 'on' state. The output of transistor T7 is connected to letter 'W' of the LED word array and thus letter 'W' is illuminated.

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