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Electronic circuit diagram Switching Power Supply

Electronic circuit diagram Switching Power Supply

TV transmitter VHF Bands I, II, or band III

This TV transmitter will handle frequencies up to about 250MHz, so it will work perfectly if you have on your telly. In principle, the transmitter should work up to 500MHz or more, using the BF959 bipolar transistor. You should be able to generate a signal on UHF channel 21, but I have not (yet) tried […]

LM555 Electronics Schematic Diagram Variable Oscillator test equipment part 41

LM555 Electronics Schematic Diagram Variable Oscillator test equipment part 41 LM555 Electronics Schematic Diagram Variable Period Oscillator part 41

7 segment display driver ic

7 segment display driver ic 7 segment display driver segment using cd4026 driver segment using BA6250  

sensor circuit

Alarm music for sensor circuit using UM3483 R1,3,4 ……….. 100K R2 …………… 56K R5 …………… 330K VR …………… trimport 100K C1 …………… 33pF C2 …………… 22uF/10V C3 …………… 100nF C4 …………… 4,7uF/10V C5,6 …………. 20nF C7 …………… 100uF/10V Q1 …………… 9012 Q2 …………… 9013 IC1 ………….. UM3483, MB683 S1 …………… Push on Sw SP …………… […]

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