این هم لینک مدارات تایمر و نوسان ساز 

Budget timer

Long period timer

555 time delay circuit

Low frequency clock

1 Second Time Base From Crystal Oscillator

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

Wide-swing Variable Crystal Oscillator

Circuit that momentarily closes a pair of contacts at long intervals

4-Bit binary clock

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

Square wave to sine wave converter

Day / Night / 24 Hour Select Sensor

One transistor timer

Variable timer

Micropower pulse generator (PDF)

Square wave oscillator

Triangle wave oscillator

Sawtooth wave oscillator

Sine/Cosine wave oscillator

555 timer

555 oscillator

Stable multivibrator (IC)

Stable multivibrator (Transistor)

Push Button Switch Debouncer

Square wave oscillator

5 to 30 Minute Timer

NE555 Basic Monostable

Mini DDS (Direct Digital Synthesis)

Astable Multivibrator

AD9852 DDS schematic

A GPS receiver based frequency standard

Adjustable phase quadrature generator

Counter speed doubler

Fast rise-time multivibrator

Sample-hold controlled oscillator

Sine wave oscillator

LM3900 sine wave oscillator

CMOS 4011 oscillator

Simple frequency doubler

Sinewave frequency doubler

555 timer circuits

Linear voltage to frequency converter

Voltage controlled triangle / square generator

Monostable multivibrator

Clock generator

555 Timer Tutorial + Circuits

Frequency comparator - 74HCT74

Clock frequency doubler

Versatile electronic timer