Electronic Circuits and Tutorials
Electronics Schematics - O

Square Wave Oscillators Circuits

10 Hz to 10 Khz VCO With Square and Triangle Wave:

Convert periodic waveforms to square waves: 08/16/2001 EDN - Design Ideas / Converting periodic waveforms to square waves is an integral part of extracting a clock signal from data, creating waveform generators, and making timing-pulse generators. Any square-wave-conversion circuit is more valuable when the square wave's duty cycle is variable and controllable. Figure 1 shows a circuit that has these attributes and can drive several TTL-compatible loads..

Flea Power Oscillator Consumes only 1 µA: 05/21/98 EDN-Design Ideas

Gated Oscillator Emulates a Flip Flop: 03/16/95 EDN-Design Ideas

Harmonic oscillator:

Oscillator turns on Instantly, off Synchronously: 05/23/96 EDN-Design Ideas

Rounding Off' a Square Wave:

Square wave modulator has variable frequency and pulse width: 08/08/2002  EDN - Design Ideas / A few years ago, I worked at a disk-drive company. We had a plating facility that required square waves to drive the high-voltage plating operation. The challenge was that the square wave's pulse width had to be variable, along with the duty cycle.

Square Wave Oscillator #1:

Square Wave oscillator #2:

SwOpAmp Makes Square Wave Generator: 02/15/96 EDN-Design Ideas

Tiny Programmable Oscillator With 5Khz to 20 MHz Span: Not only does this circuit take up very little board space but it can be controlled with only3-signals from a microprocessor.  The MAX5160 is a200K digital pot with32 taps. To move up to the next tap, set UP/DOWN high and pulse INCREMENT low. To move down, set UP/DOWN low before pulsing INCREMENT. The LTC1799 is a programmable oscillator from Linear Technology.

Voltage Controlled Triangle / Square Generator:

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