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Archives for July, 2015

12 Volt 1 Amp DC Power Supply Adapter (12 Watts) picture circuit diagram

12 Volt 1 Amp DC Power Supply Adapter (12 Watts) picture circuit diagram 12v symmetric power supply using 7812, 7819, DZ12v   CT simetris and non CT Transformer Power Supply 12V PCB 12 Volt 1 Amp DC Power Supply Adapter (12 Watts) picture circuit diagram This circuit provides ±12V regulated DC output based on LM7812 and […]

Switches Diagram for traffic signs

Switches Diagram for traffic signs

Circuit HAMCOMM MODEM

The program only needs a simple “infinite gain” circuit to square off the input tones so that they can be read by the serial port. This is achieved using a 741 operational amplifier. The basic circuit of the unit is given below. The RS232 pins are given for a 9-pin serial port. A 25-pin port […]

Battery Control Charger Circuit Diagram

Battery Control Charger Circuit Diagram using LMC1062, LMC4042, 74HC174, ZMR500, ZVN4206A

Variable dc power supply circuit diagram

Variable dc power supply circuit diagram Variable dc power supply circuit diagram using lm317 Variable dc power supply circuit diagram Variable dc power supply circuit diagram

Making Frequency Modulation circuit

In this case the frequency of the oscillator is determined by the values of the capacitor and inductor: C and L. Notice that I have now added a diode and another capacitor 10C (10 times bigger than C). The oscillations across the ends of L are a sinewave, varying above and below the Gnd (battery […]

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