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Generating a simple sine wave – Circuit Schematic
Generating a simple sine wave
I needed a sine wave carrier for a magnetic transponder system I am working on. Various types of crystal based oscillator are available such as the Pierce, but ...
Simple Square wave Generator using transistors ~ Easy Electronics – Circuit Schematic
Simple Square wave Generator using transistors ~ Easy Electronics
An useful feature of this circuit is that the frequency can be changed by changing a capacitor value, a switch can be add to choose between various frequencies....
Simple Square Wave Generator Circuits – Circuit Schematic
Simple Square Wave Generator Circuits
Using a field effect transistor at the input of a schmitt trigger, means a low value capacitor can be employed. The trigger by Q1 and O2 has a hysteresis of app...
Bubba oscillator with TLV2474 – Circuit Schematic
Bubba oscillator with TLV2474
understanding of the function and sizing of the resistors Rg and Rf for the bubba oscillator circuit described on the application report SLOA060 - march 2011, p...
Quadrature Oscillator with TLV2474 – Circuit Schematic
Quadrature Oscillator with TLV2474
I did some quick playing with the circuit. It is very close to sustaining oscillation. Changing R2 to 10. 5k will cause it to sustain oscillation. The original ...
10-100kHz sine-wave oscillator – Circuit Schematic
10-100kHz sine-wave oscillator
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Membuat Pemancar Ultrasonic Dengan IC 555 – Circuit Schematic
Membuat Pemancar Ultrasonic Dengan IC 555
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Tri-Tet Oscillator – Circuit Schematic
Tri-Tet Oscillator
QST`s most recent development ”the Tri-tet oscillator ”has made the single-tube crystal transmitter a really practical affair at last. Practical because it ...
The Ecology of the Oscillator Transmitter – Circuit Schematic
The Ecology of the Oscillator Transmitter
An oscillator-only transmitter sounds like the simplest possible means of getting on the radio air ”until you consider the challenges it presents as part of t...
Boosted Pierce – Circuit Schematic
Boosted Pierce
a Pierce "aperiodic" oscillator driving a non-neutralized power amplifier for a multiband Morse code transmitter that requires just one coil and minimum adjustm...
Tune Your Brainwaves Instantly with an Ultra-Simple 555 Circuit – Circuit Schematic
Tune Your Brainwaves Instantly with an Ultra-Simple 555 Circuit
Let`s face it not every day`s the greatest. Sometimes you just don`t feel like doing much of anything. Wouldn`t it be nice if there was a way to change your bra...
Simple 50 to 300 MHz Colpitts Oscillator – Circuit Schematic
Simple 50 to 300 MHz Colpitts Oscillator
Simple high efficiency Colpitts oscillator. In the higher frequency ranges, above 50 MHz, Colpitts oscillators are used because stray circuit capacitance will b...
Emergency Siren Simulator – Circuit Schematic
Emergency Siren Simulator
The heart of the circuit is the two transistor flasher with frequency modulation applied to the base of the first transistor. When the pushbutton is depressed, ...
Oscillator circuit – Circuit Schematic
Oscillator circuit
It is a low frequency Wiew bridge sinusoidal oscillator for the audio range with very low distortion, useful to test a variety of audio equipments. The circuit ...
Low Frequency Sine wave Generators Schematic – Circuit Schematic
Low Frequency Sine wave Generators Schematic
The two circuits below illustrate generating low frequency sine waves by shifting the phase of the signal through an RC network so that oscillation occurs where...
Ultrasonic Mosquito Repeller Circuit Using CMOS IC – Circuit Schematic
Ultrasonic Mosquito Repeller Circuit Using CMOS IC
This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit is work with based on the theory that insects like mosquito can be repelled b...
Free Running Oscillator Circuit – Circuit Schematic
Free Running Oscillator Circuit
This is a circuit for oscillator using astable mode operation. The basic oscillatior is using 555 timer IC. This circuit is also give mode free running oscillat...
Simplest Piezo Driver Circuit Explained – Circuit Schematic
Simplest Piezo Driver Circuit Explained
In the previous post we discussed a piezo transducer element and learned how to use it with electronic circuits. In this article we will see how a piezo tranduc...
Voltage Controlled Oscillator using NE555 – Circuit Schematic
Voltage Controlled Oscillator using NE555
A voltage-controlled oscillator using NE555 The circuit is usually known as a voltage-to-frequency converter as a result of the output frequency will be modifie...
Negative Resistance Oscillator Circuits – Circuit Schematic
Negative Resistance Oscillator Circuits
This is a circuit of negative resistance circuits. All of the preceding circuits rely on RC time constants to achieve resonance. LC combinations can also be use...