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flip flop led flashing circuit – Circuit Schematic
flip flop led flashing circuit
A very interesting schematic of Flip flop LED flashing circuit. The circuit actually is an astable multivibrator which starts blinking LEDs one by one when powe...
crystal tester circuit – Circuit Schematic
crystal tester circuit
A very useful project of a crystal tester circuit or xtal tester circuit built with only few components the circuit form an oscillator that will only oscillate ...
555 tone generator – Circuit Schematic
555 tone generator
This is a 555 tone generator circuit based on NE555 timer IC. NE555 is a very famous IC used in many circuits and performs variety of tasks. In this circuit the...
555 tone generator 8 ohm speaker – Circuit Schematic
555 tone generator 8 ohm speaker
This is a basic 555 squarewave oscillator used to produce a 1 Khz tone from an 8 ohm speaker. In the circuit on the left, the speaker is isolated from the oscil...
low distortion audio range oscillator – Circuit Schematic
low distortion audio range oscillator
Producing low-distortion sine waves, this oscillator operates over the range 16 to 22000 Hz.....
electronic canary – Circuit Schematic
electronic canary
Feeling chirpy? Attract new friends with this modified hartley oscillator. You could also use it as a replacement doorbell.....
simple white noise generator – Circuit Schematic
simple white noise generator
This two-transistor white noise generator has a surprising feature about 30dB more noise than the more traditional designs. Q1 and Q2 can be any small-signal tr...
low frequency sinewave generators – Circuit Schematic
low frequency sinewave generators
The two circuits illustrate generating low frequency sinewaves by shifting the phase of the signal through an RC network so that oscillation occurs where the to...
1khz sinewave generator – Circuit Schematic
1khz sinewave generator
This circuit generates a good 1KHz sinewave using the inverted Wien bridge configuration.....
self powered sine to square wave converter – Circuit Schematic
self powered sine to square wave converter
This circuit is intended to provide good square waves converting a sine wave picked-up from an existing generator. Its major feature consists in the fact that n...
tube <77> vco – Circuit Schematic
tube <77> vco
The VCO presented here is a direct derivative of the original oscillator invented by Friedrich Trautwein in 1932. And it perfectly demonstrates why I`m so cynic...
vcd – Circuit Schematic
vcd
This was originally developed a timing accessory for a sequencer I was working on, though when fed from a VCO, interesting frequency trills like those of the ol...
burst generator – Circuit Schematic
burst generator
Descriptions of the various modules in a home built music synthesizer - Sub-oscillator project. .....
tune coil – Circuit Schematic
tune coil
And normally tuning is not easy: you`ll fire the system up and try to notice the spark length, shut it off (and pull the plug!), re-tune (move the tap on the pr...
SSTC – Circuit Schematic
SSTC
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tesla – Circuit Schematic
tesla
A low-voltage demonstration Tesla coil using a solid-state photovoltaic relay to replace the conventional spark gap has been analyzed and then built. This relay...
sound generator – Circuit Schematic
sound generator
Circuit given below is configured on astable mode of operation. In place of a fixed resistance, LDR has been kept for getting variable resistance for the 555 ti...
build an infrasound generator circuit for ghost effects – Circuit Schematic
build an infrasound generator circuit for ghost effects
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making flasher timer oscillator circuits using a single chip – Circuit Schematic
making flasher timer oscillator circuits using a single chip
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audio sine wave generator – Circuit Schematic
audio sine wave generator
This single IC circuit which is based on the Wien Bridge Oscillator, produces low distortion sine waves in the range of 15 Hz up to 22KHz in two ranges. The two...