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Archives for December, 2012

FM transmitter booster circuit

60W Guitar Amplifier circuit diagram using MJ11015 MJ11016

60W Guitar Amplifier circuit diagram using MJ11015 MJ11016 Amplifier parts: R1 6K8 1W R2,R4 470R 1/4W R3 2K 1/2W Trimmer Cermet R5,R6 4K7 1/2W R7 220R 1/2W R8 2K2 1/2W R9 50K 1/2W Trimmer Cermet R10 68K 1/4W R11,R12 R47 4W C1,C2,C4,C5 47µF 63V C3 100µF 25V C6 33pF 63V C7 1000µF 50V C8 2200µF […]

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 […]

Intercom switch circuit

Intercom switch circuit Intercom switch circuit Two line intercom plus a telephone changeover switch Click here for the circuit diagram. The circuit presented here can be used for connecting, The circuit presented here can be used for connecting two telephones in parallel

OpAmp Booster Designs using BC549C, BC550C

Op-Amp Booster Designs using BC549C, BC550C OpAmp Booster Designs using BC549C, BC550C

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