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DIY Crystal Oscillator Circuit – Circuit Schematic
DIY Crystal Oscillator Circuit
A very simple DIY crystal oscillator circuit which use a quartz for frequency stability and a good rf transistor. Use a 2-nd or 3-rd harmonic crystal, for.....
Digital Sine Wave Generator Circuit – Circuit Schematic
Digital Sine Wave Generator Circuit
The digital sine wave generator (oscillator) circuit has the advantage that only few components are needed to generate signals with high amplitude constants and...
High Frequency Generator Circuit – Circuit Schematic
High Frequency Generator Circuit
This circuit generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. The frequency can be controlle...
1 Hz Generator and 2 Hertz Oscillator Circuit – Circuit Schematic
1 Hz Generator and 2 Hertz Oscillator Circuit
This 1 Hz and 2Hz generator or oscillator is built with 4060 as an oscillator and a 14 bits counter. To obtain a 1Hz signal after 4060 we use 1/2 4013. This cir...
555 Electronic Metronome Circuit – Circuit Schematic
555 Electronic Metronome Circuit
I have assembled the metronome circuit several times and it did not work. Two 555 manufacturers websites (ON Semiconductor and National Semiconductor) propose c...
Small Vacuum Tube Tesla Coil 2 – Circuit Schematic
Small Vacuum Tube Tesla Coil 2
This tube tesla coil was built inside a CPU power supply unit. It was first built on a workbench using components and jumpers for connections. The tube used is ...
Medium Solid State Tesla Coil – Circuit Schematic
Medium Solid State Tesla Coil
The design is a clone of Steve Ward`s MiniSSTC circuit; the schematic is reprinted here with credits to Steve Ward: 9schem. jpg. This circuit performs very well...
Analog Oscilloscope Pong – Circuit Schematic
Analog Oscilloscope Pong
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Astable multivibrator lights LED from a single cell – Circuit Schematic
Astable multivibrator lights LED from a single cell
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555 audio oscillator Analog Integrated Circuits – Circuit Schematic
555 audio oscillator Analog Integrated Circuits
The 555 integrated circuit is a general-purpose timer useful for a variety of functions. In this experiment, we explore its use as an astable multivibrator, or ...
Wien oscillator – Circuit Schematic
Wien oscillator
Build a sine wave generator. I use this schematic:. The op-amp I have used is the TL082 and the power supply of 9V. However, I do get a nasty sound, indicating ...
Singing Tesla Coil – Circuit Schematic
Singing Tesla Coil
Hey everybody! I`m working on a Singing Tesla Coil for a 4-H electricity project and I just finished my first draft of the circuitry. I was wondering.....
oscillator and frequency divider schematics – Circuit Schematic
oscillator and frequency divider schematics
The other thing I thought of is using a phase shift oscillator followed by an inverter to turn the sine into a square wave, but it semms a rather crude solution...
LC Oscillator – Circuit Schematic
LC Oscillator
Hello. I am trying to design an LC Colpitts oscillator. This is the circuit. I came up with this based on the Colpitts oscillator shown on this.....
Design of astable multivibrator – Circuit Schematic
Design of astable multivibrator
Hello sir, I need to design an astable multivibrator and supposed to calculate the maximum and minimum frequency generated at the output. Can you.....
Crystal testing – Circuit Schematic
Crystal testing
Can anyone point me in the direction of a simple useable circuit i can build for testing crystals? I have seen loads of circuits as i am googling.....
Colpitts Crystal Oscillator – Circuit Schematic
Colpitts Crystal Oscillator
Hey, Just wondering how to choose my L,C,R variables to achieve a desired frequency. Do I just choose any combination that yields X Mhz = 1 / ( 2pi *.....
Building a square wave generator – Circuit Schematic
Building a square wave generator
Hope someone can help me. I want to build a square generator. I want it to have control for frequency variable 1hz to 200hz, a switchable voltage.....
Astable Multivibrator Calculations – Circuit Schematic
Astable Multivibrator Calculations
for the time in which it gets charged to 0. 6V, the other capacitor has already charged a whole lot(a value which I can`t figure out because the setup does not ...
Opamp Wien-bridge oscillator – Circuit Schematic
Opamp Wien-bridge oscillator
The Wien-bridge oscillator, consists of an Operational Amplifier (OA) in a non-inverting configuration with gain 1 + R2/R1 and a RC feedback network.....