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555 Low-duty-cycle Oscillator – Circuit Schematic
555 Low-duty-cycle Oscillator
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Oscillator Circuits – Circuit Schematic
Oscillator Circuits
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ICL8038 Precision Waveform Generator/Voltage Controlled Oscillator – Circuit Schematic
ICL8038 Precision Waveform Generator/Voltage Controlled Oscillator
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How to build Low distortion Audio range Oscillator – Circuit Schematic
How to build Low distortion Audio range Oscillator
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Audio Oscillators – Circuit Schematic
Audio Oscillators
It is a resistance tuned oscillator covering from 35 cps (frequency unit was the cycle at this time) to 35, 000 cps in 3 ranges. The major problem with such a r...
Multivibrator – Circuit Schematic
Multivibrator
At one of the previous chapters we have learned how to use a transistor as an electronic switch. At this chapter we will see how a transistor can be used to swi...
Function generator – Circuit Schematic
Function generator
A device used to generate different types of electrical waveforms over a wide range of frequencies is called function generator. The most common wave forms are ...
Two Crystal Test Circuits – Circuit Schematic
Two Crystal Test Circuits
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square wave oscillator circuit – Circuit Schematic
square wave oscillator circuit
Using two gates from a CMOS 4011 NAND chip, a simple Squarewave oscillator can br made. Alternatively a CMOS 4001 chip can also be used, or a TTL equivalent. In...
Function Generator – Circuit Schematic
Function Generator
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Electronic Canary Circuits – Circuit Schematic
Electronic Canary Circuits
This circuit is a modified Hartley oscillator with a couple of extra components included. The transformer is a small audio transformer, type LT700. The primary ...
Waveform Generators Circuits – Circuit Schematic
Waveform Generators Circuits
Many applications require low-frequency signal generators that can deliver high-performance, high-resolution signals. This Design Idea presents a circuit that g...
Signal Generators Circuits – Circuit Schematic
Signal Generators Circuits
Converting periodic waveforms to square waves is an integral part of extracting a clock signal from data, creating waveform generators, and making timing-pulse ...
Crystal Oscillators – Circuit Schematic
Crystal Oscillators
The schematic above illustrates dividing a crystal oscillator signal by the crystal frequency to obtain an accurate (0. 01%) 1 second time base. Two cascaded 12...
Components Voltage Tester Circuit – Circuit Schematic
Components Voltage Tester Circuit
This simple circuit tests speakers, microphones, transformers and voltage. It`s basically a very low frequency oscillator that produces extremely short `fruity`...
Low-distortion Audio-range Oscillator circuit – Circuit Schematic
Low-distortion Audio-range Oscillator circuit
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Electronic Canary circuit – Circuit Schematic
Electronic Canary circuit
Feeling chirpy? Attract new friends with this modified hartley oscillator. You could also use it as a replacement doorbell.....
EMS Modifications – Circuit Schematic
EMS Modifications
Voltage Controlled Shape on each Oscillator, Calibrated 1V/Octave Keyboard Input, External Gate Input socket, Portamento/Glide, Patchable Voltage Inverter, Extr...
Adjustable High/Low Frequency Sine wave generator – Circuit Schematic
Adjustable High/Low Frequency Sine wave generator
This circuit uses the versatile MAX038 function generator. Although in this circuit some of the advanced characteristics of this IC are disabled, you can genera...
Multi-Purpose VFO – Circuit Schematic
Multi-Purpose VFO
The Frequency instability in VFO stage is a common problem. This is usually occurred in VFO`s due to low Q  of the tank circuit, capacitors real value, power ...