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Circuit diagram in making incandescent lamps

Circuit diagram in making incandescent lamps This simple circuit that can be used to flash incandescent lamps up to 10W power rating. The circuit is ideal for making flashing beacons on automobiles and other applications like that.The circuit is nothing but  an astable multi vibrator based on Q1&Q2 ( BC557&BD139).The capacitor C1 is the main […]

Make Wireless portable with CA3140,4069,4098

Parts: R1,R2,R19_______1K 1/4W R3-R6,R13,R17_100K 1/4W R7,R15__________1M 1/4W R8_____________50K 1/2W R9____________470R 1/4W R10___________470K 1/4W R11___________100K 1/2W R12___________220K 1/4W R14,R16________68K 1/4W R18____________22K 1/4W R20___________150R 1/4W C1,C7_________100µF 25V C2,C3_________330nF 63V C4-C6___________4µ7 25V D1,D5______Red LEDs D2,D3________1N4148 75V D4________BZX79C7V5 7.5V 500mW IC1__________CA3140 or TL061 IC2____________4069 IC3____________4098 or 4528 Q1,Q2_________BC238 25V 100mA NPN L1_____________10mH miniature Inductor BZ1___________sounder (incorporating 3KHz oscillator)

LCD Modules circuit

LCD Modules circuit HD44780 based LCD Modules circuit

Circuit diagram FM OSCILLATOR WITH BLY87

Circuit diagram FM OSCILLATOR WITH BLY87 Component list of the FM Oscillator with the BF900 Resistors: R1 : 47k, 1/8 W R2 : 47k, 1/8 W R3 : 47k, 1/8 W R4 : 100E, 1/8 W R5 : 220k, 1/8 W R6 : 100k, 1/8 W R7 : 150E, 1/8 W R8 : 10k, lin. […]

Counterdivider and oscillator using CD4060B

Counterdivider and oscillator using CD4060B / cd4017

Continuity Tester Circuit Diagram

Continuity Tester Circuit Diagram using 2N3905, 2N3904, 1N4148

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