Oscillators Timing Schematics I pdf

Budget timer
Long period timer
555 time delay circuit
Low frequency clock
Countdown timer with relay
DDS using AD9835
1 Second Time Base From Crystal Osc.
Power-On Time Delay Relay Circuit
Low Voltage , High Current Time Delay Circuit
Power-Off Time Delay Relay Circuit
Generating a Delayed Pulse With a dual 555 Timer
1KHz Sinewave generator
Timed beeper

Time Delay Relay

Time Delay Relay
Circuit that momentarily closes a pair of contacts at long intervals
Onboard Fogger Timer
Colpitts 1 to 20 MHz Crystal Oscillator
Divide By 1-1/2 Circuit
Simple sinewave generator
Two Transistor Sine Wave Oscillator
10 Hz to 10 Khz VCO with Square and Triangle wave
Line powered 60Hz clock generator (PDF)
Micro-power pulse generator (PDF)
Darkroom camera shutter timer
Divide by 1.5 counter (PFD)
High-output square wave generator (PDF)
D Flip-flot one-shot circuits (PDF)
Clock divider
Clock doubler
CMOS oscillator
Crystal 32.768KHz CMOS Oscillator
Crystal oscillator
Cheap 40KHz clock
Stable 40KHz clock
‘Rounding Off’ a square wave
Switch debounce using 555