555 Timer Circuits

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Light Control System (OP295)
Fast data aquisition 2
Broadcast Band Rf Amplifier Circuit
15v battery operated fm
Cable TV amplifier
Model 300 Receiver
Astable multivibrator in an 8 pin PIC
Simplified magnetic amplifier circuitry
50 MHz frequency counter voltage meter & SWR/PWR indicator
5-channel low-power programmable sensor signal processor with AD7714 circuit
Frequency crystal oscillator circuit diagram of 10kHz-150kHz
With a CD4011 CD4518 making colorful cycle decorative lights