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Showing posts from March, 2011

Voltage regulator with LT1086

One way to provide good negative-voltage regulation is with a low-drop-out positive-voltage regulat… Read this circuit » Voltage regulator with LT1086

Horn siren use the IT and OT transformer

Basically siren on a police patrol car and an ambulance use electronic circuit connected to the … Read this circuit » Horn siren use the IT and OT transformer

2 X 0,32W BA5386 amplifier schematic

Amplifier circuit above scheme is a combination of the two IC was then made into one of its supply … Read this circuit » 2 X 0,32W BA5386 amplifier schematic

2,3 W Mono power amplifier schematic

This amplifier circuit using ic BA534 as a main amplifier, manufactured by ROHM ic, and packaged i… Read this circuit » 2,3 W Mono power amplifier schematic

Relay driver using ne 555

This circuit is used to drives relays of 24 and 18 VDC from a 12 Volt power supply. The basic ci… Read this circuit » Relay driver using ne 555

12 V battery charger with PUT

A short-circuit proof battery charger will provide an average charging current of about 8A to a … Read this circuit » 12 V battery charger with PUT

Low Forward Drop Rectifier schematic

A TMOS power FET , Q1 , and LM393 comparator provide a high efficiency rectifier circuit. When Va e… Read this circuit » Low Forward Drop Rectifier schematic

Power amplifier for FM radio receiver

Schematic  is suitable for use in radio tuner or FM radio receiver when it is assembled and ready f… Read this circuit » Power amplifier for FM radio receiver

LM390 power amplifier schematic

Circuit schematic above is / include power amplifiers that have low power output. 1 Watt output pow… Read this circuit » LM390 power amplifier schematic

3 Watt power amplifier schematic

This time I will share a circuit of schematis power amplifier with LM380 IC that has similarities w… Read this circuit » 3 Watt power amplifier schematic

6 Watt stereo power amplifier schematic

Basiccally,this amplifier works with the IC, which is where ic is associated with several other com… Read this circuit » 6 Watt stereo power amplifier schematic

LM377 Power amplifier schematic

Various needs of the amplifiers are all different. Different places and use also requires a differe… Read this circuit » LM377 Power amplifier schematic

Capacitor leakage circuit tester

Generally capacitor that complement with television circuit is often leaked. Consequently spots mor… Read this circuit » Capacitor leakage circuit tester

FM Radio Transmitter schematic with pcb

For those of you like / love to talk in the air can assemble this simple circuit that can be receiv… Read this circuit » FM Radio Transmitter schematic with pcb

IC LM12 , 150 Watts high power amplifier

To supply the required voltage to the  amplifier circuit minimum of 7 Volt and a maximum of 24 volt… Read this circuit » IC LM12 , 150 Watts high power amplifier

Radio station blocker circuit

This device is reversal of a radio station , because it sends an empty signal to the frequency chos… Read this circuit » Radio station blocker circuit

Long range FM voice Transmitter circuit

This circuit shows how to build a super-sensitive, mini-powered FM transmitter consisting of a RF (… Read this circuit » Long range FM voice Transmitter circuit

DIY HDMI Switcher

This is a relatively slow place, so if you don't feel like interpretation the total phenomenon… Read this circuit » DIY HDMI Switcher

Metal Detector Circuits

One type of metal detector is a type of beat frequency oscillator (BFO). The methods used in metal… Read this circuit » Metal Detector Circuits

Fan controlled by audio signal and temperatue sensor

Circuit which is also equipped with temperature sensors would protect the high temperature. Ho… Read this circuit » Fan controlled by audio signal and temperatue sensor

10.000x Booster with Transistor

10.000x Booster with Transistor,  For a collector follower with emitter resistor, you’ll often fin… Read this circuit » 10.000x Booster with Transistor

Video Amplifier using BC560

Video Amplifier using BC560 Schematic Diagram The video amplifier in the diagram is a well-kno… Read this circuit » Video Amplifier using BC560

High-pass and low-pass filters

Subsonic and ultrasonic filters can be combined into a single circuit for more stable and orderl… Read this circuit » High-pass and low-pass filters

LM2901 LED bar-graph meter

Several LED above and other components used to determine the signal amplifier, when in a state of h… Read this circuit » LM2901 LED bar-graph meter

Rapid battery charger schematic

The First ac voltage from tranformator will be rectified and filtered to the LM723 voltage regulato… Read this circuit » Rapid battery charger schematic

9V output switching power supply

By using the circuit you do not bother to roll  up a transformer that is used to reduce voltage AC … Read this circuit » 9V output switching power supply

Universal switching power supply for TV

The schematic above can be used for supply on color TV for all type TV circuit. But we need to know… Read this circuit » Universal switching power supply for TV

Low ripple power supply schematic

Simple schematic above is a circuit of power supply that can operate at high current with very smal… Read this circuit » Low ripple power supply schematic

LM338 Adjustable power supply circuit

It's a circuit of adjustable 10-A regulator , with the IC LM338. The first working mode 220V AC… Read this circuit » LM338 Adjustable power supply circuit

Inverter 12V to 115V with 25 W power output

Low power inverter schematic are only use 9 components , one of which IC 556 , TIP120 NPN Darl… Read this circuit » Inverter 12V to 115V with 25 W power output

Classical audio power amplifier with IT and OT transformer

The circuit is devote to the radio receiver in which sound ( the gear ) is weak. With the help of t… Read this circuit » Classical audio power amplifier with IT and OT transformer

TA7214 stereo audio power amplifier

Not all that omplicated circuit schematic of power amplifiers have a good and quality sound, but in… Read this circuit » TA7214 stereo audio power amplifier

TA7210P Not only used to power amplifier ,it can to be companion

To improve the quality of the amplifier circuit above in addition to other power amplifiers , can a… Read this circuit » TA7210P Not only used to power amplifier ,it can to be companion

3,4 W power amplifier schematic

The schematic above is amplifier based on ic TA7211P or TA7212P , circuit above using OT transforme… Read this circuit » 3,4 W power amplifier schematic

Audio amplifier with IC TA7203P

Stereo power amplfier with TA7203P , is suitable for the room your car , your car it will build… Read this circuit » Audio amplifier with IC TA7203P

10 watt power amplifier

10 watt power amplifier based on TA7200P has a 3,3 W output and the equation of TA7204P has a pow… Read this circuit » 10 watt power amplifier

3V Fluorescent lamp voltage source

Fluorescent lamp assembly using only a 3V voltage source. 2 battery which i parallel to supply… Read this circuit » 3V Fluorescent lamp voltage source

Accu charger with IC LM723C

Circuit of 12 V accu / battery charger with IC LM723C. This Accu charger have input from the first… Read this circuit » Accu charger with IC LM723C

Radio circuit without source voltage

Maybe you do not believe , because so long radios sold in the form usiong DC power as the driving c… Read this circuit » Radio circuit without source voltage

Bully FM radio signals

Interfere with fm radio signal is fun, if you're bored or no work, you can do at home, where ne… Read this circuit » Bully FM radio signals

Tranceiver DC adapter

This DC adaptor provides a regulated 9V source for operating a transceiver in the car .The IC LM317… Read this circuit » Tranceiver DC adapter

High temperature protector with IC 3584

IC 3584 has thermal protection or voltage automatically shutdown when the temperature at IC exceed … Read this circuit » High temperature protector with IC 3584

Controlling switch with relay driver

The circuit above is  a circuit of drivers to control high voltage using the relay. Relay is contro… Read this circuit » Controlling switch with relay driver

1W Audio power amplifier circuit

LA4145 an IC with SIL-9 package and manufactered by SANYO. This ic has miraculous equation with LA4… Read this circuit » 1W Audio power amplifier circuit