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Circuit Audio using TDA1554
RF power amplifier design

RF power amplifier design using MGA86563 triquint semiconductor RF power amplifier design circuit using MGA86563 triquint semiconductor

SCR circuit

SCR circuit for Time Switch R1 ………….. 15K ohm R2 ………….. 600 ohm R3 ………….. 4,7K ohm R4 ………….. 22K ohm R5 ………….. 68 ohm C1 ………….. X C2 ………….. 47uF – 25V C3 ………….. 0,1uF – 600V TR1-TR2 ……… 2N5306 SCR …………. 2N4444 PS ………….. Puas Switch D1 ………….. 1N – 4003

Radio Remote Control using DTMF receiver transceiver

Radio Remote Control using DTMF receiver transceiver

Home alarm systems

home alarm systems home alarm systems using CCTV Camera Auto Electronic Shutter Control Auto Switch CCTV Camera Auto Electronic Control Auto Switch circuit diagram CCTV switch circuits using 555, 74HC14, 4017, 2N2222 home alarm systems cameras installed at different locations in the city have been dismounted following the home and looking for CCTV camera and […]

Transformerless power supply design. Part : 2

Transformerless power supply design Transformerless power supply design 5V Transformerless power supply design using 7805 Transformerless power supply design This circuit is a small +5V power supply. … and variable power supply circuit of 12 volts using IC 7805 and not any operational amplifier. Transformerless power supply design

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