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Oscillators: Square wave

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..

FleaPower Oscillator Consumes only 1 A: 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. Also, the amplitude of the pulses had to be adjustable..

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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