Oscillators circuit
Simple version. Full version location at http://circuitsradio.com
View original of this circuit: http://circuitsradio.com/schematics/electrical-engineering/Oscillators/index.html
1 Second Time Base From Crystal Osc.
10 Hz to 10 Khz VCO with Square and Triangle wave
10MHZ to 1MHZ Frequency Converter with crystal.
5 to 30 Minute Timer
555 IC Oscillator
555 oscillator
555 time delay circuit
555 timer
555 Timer Tutorial + Circuits
555 Tone Generator (8 Ohm Speaker)
A GPS receiver based frequency standard
A Low Power RF ID Transponder (article RF Design magazine)
A very STABLE 40khz generator (IR LEDs)
AD9852 DDS schematic
Audio Noise Sources for Generating Phase Noise (22k)
Audio Phase-shift Oscillator with Amplitude (10k)
AUDIO SWEEP OSCILATOR. This circuit was designed for a sound effect, but may serve other useful purposes when a basic, swept-frequency audio source is required. It produces both square and triangular wave outputs that ascend from about 80 to 730 Hertz in a repeating cycle of about 12 seconds. Appropriate component-value substitutions will yield variations in these parameters.
Blocking Oscillator
Bootstrapped PLL Improves Oscillator Performance (33k)
Budget timer
Cheap 40KHz clock
Choosing a Frequency Multipliers Waveform (32k)
Circuit that momentarily closes a pair of contacts at long intervals
Clock divider
Clock doubler
Clock generator
CMOS oscillator
CMOS Oscillator
Cockcroft-Walton Diode Voltage Multipliers (36k)
Collection of three Clock Generators
Colpitts 1 to 20 MHz Crystal Oscillator
Constant Reactance Voltage (article RF Design magazine)
Countdown timer with relay
Crystal 32.768KHz CMOS Oscillator
Crystal 32.768KHz CMOS Oscillator
Crystal oscillator
Crystal Oscillator
D Flip-flot one-shot circuits (PDF)
Darkroom camera shutter timer
Day / Night / 24 Hour Select Sensor
DDS using AD9835
DIGITAL NOISE GENERATOR. This circuit produces a repeating sequence of serial data that contains attributes useful for emulating audible noise.
Divide By 1-1/2 Circuit
Divide by 1.5 counter (PFD)
DRIFTING OSCILLATORS
ECHO TONE OSCILLATOR. This simple circuit amplitude-modulates a single tone in such a manner to approximate the echo effect one might obtain, for instance, with sonar apparatus. Any reader who has been on a sonar-equipped vessel will realize that some imagination is required to appreciate the similarities among this simple scheme and the real thing. However, this circuit might adjunct a small model (of a submarine, perhaps) to add the dimension of sound.
Flasher Circuit (16k) This two-transistor, two-wire circuit finds numerous applications.
Flasher Ideas
FM Oscillator
Frequency generator with 7 standard step
Frequency Tripler using the CA3028 (15k)
Function Generator. This kit is limited to < 100 kHz and has an output impedance of 600 ohms.
Generating -5VDC from +5VDC
Generating a Delayed Pulse With a dual 555 Timer
Generating a Delayed Pulse With a dual 555 Timer
HCMOS Gates Make Frequency Multipliers (27k)
High-output square wave generator (PDF)
Highvoltage generator. Easy to build, this high voltage generator is capable of generating up to 50KV but the breakdown voltage of the coil limits the voltage to a value somewhat lower. (simple)
HOURLY CHIME FUNCTION GENERATOR
Intermittetly Pulse Generator
Line powered 60Hz clock generator (PDF)
Long period timer
Low Distortion Crystal Oscillator (19k)
Low Frequency (article RF Design magazine)
Low frequency clock
Low Frequency Sinewave Generator
Low Phase Noise Systems - Hints and Tips
Low Voltage , High Current Time Delay Circuit
Low-Cost Phase Noise Measurement
Micro-power pulse generator (PDF)
Micropower pulse generator (PDF)
Mini DDS (Direct Digital Synthesis)
Monostable multivibrator
NE555 Basic Monostable
New Oscillators Reach for (article RF Design magazine)
New Topology Multiplier (article RF Design magazine)
Noise generator (simple)
Onboard Fogger Timer
One transistor timer
Oscillator
Oscillator circuit to find value of transistor ft
PcGenerator. Turn your PC into a low frequency signal generator. Frequency range from 0.5-25000 Hz
Phase Locking and Tuning
Phase Noise, Harmonics and Sub-Harmonics
PIC logic probe with pulser
PLLs using ULN Oscillators
Power-Off Time Delay Relay Circuit
Power-On Time Delay Relay Circuit
Precision 1Hz Clock Generator using Chip-on-Board
Precision Metronome and Pitch generator. Precision Frequency generator 1 to 999 Hz. Precision Metronome 1 to 999 beats per minute
Push Button Switch Debouncer
Quadrature (sine/cosine) oscillator (voltage controlled)
Ramp generator (separate + & - ramps)
Reverse Bias Oscillator
Reversebias oscillator (simple)
Sawtooth wave oscillator
SCR oscillator. Silicon controlled rectifiers (SCR) can easily oscillate if there is an inductor (a speaker coil in this case) which gives just enough extra voltage to completely switch off the sustain current. (simple)
Self-powered Sine to Square wave Converter. Converts sine to square waves without a power-source
Signal generator
Simple Divide-By-N using 161s (9k)
Simple sinewave generator
Sine Wave Generator Project
Sine/Cosine wave oscillator
SINGLE-SUPPLY DIFFERENTIAL-PAIR L-C OSCILLATOR
SINGLE-SUPPLY WIEN BRIDGE OSCILLATOR
Square wave oscillator
Square wave oscillator
Square wave to sine wave converter
Stable 40KHz clock
Stable multivibrator (IC)
Stable multivibrator (Transistor)
Staircase generator
Staircase generator
Sweep Generator - Oscilloscope
Switch debounce using 555
Switching Diode Frequency Doublers (66k)
Tacho generator feedback circuit
Time Delay Relay
Time Delay Relay
Timed beeper
Tiny Crystal Oscillator (13k)
Triangle and Squarewave Generator
Triangle wave oscillator
TWIN-T AUDIO SINE WAVE OSCILLATOR. This circuit produces a clean sine wave signal ideal for audio testing, or wherever a good-quality sine voltage source is required. It uses only one integrated circuit which is a common dual operational amplifier, the Texas Instruments TL072CP. The values shown provide an output frequency of about 1000 Hertz. This frequency may be varied over a wide range, using the formula shown in the schematic.
Twin-T oscillator
Two Diode Odd-Order Multiplier
Two Transistor Sine Wave Oscillator
Ultrasonic transducer oscillator circuit
Universal Flasher Circuit (15k) This trouble-free two-wire flasher is indespensible.
Unusual Frequency Dividers (35k)
Up/Down Pulse Separator
Variable timer
Versatile electronic timer
VHF Oscillator and Multiplier AM Noise
Waveform Conversion Sine to Square/Square to Sine
Waveform generator circuits
Wide-swing Variable Crystal Oscillator
Wien Bridge Oscillator
Wien Bridge oscillator
WIEN Bridge Oscillator - 1KHZ
Zener oscillators (simple)
Zero crossing AC switch oscillator (simple)
View original of this circuit: http://circuitsradio.com/schematics/electrical-engineering/Oscillators/index.html