Electronic schematics, circuit designs
Stabilized adjustable power supply 0-15V / 5A
This regulated power supply can be adjusted between a few volts and 15V with P1 and with P2 adjust the upper limit ( 15.0V ). R6 value is 0.7V / Imax where Imax is the maximum current. At Imax = 5A, R6 is 0.14Ω
T1 and T2 must have heatsinks because power losses are great at a low output voltage and a Imax equal current but you can connect the lamp L to reduce this losses.
I’ve build this adjustable power supply and works great! I hope you’ll enjoy it too and have fun build this great stabilized power supply.
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Dynamic compressor - passive components, no power supply
This dynamic compressor with passive components reduces high signal to a lower, more constant signal. If you look at this compressor schematic , you’ll notice it has no power supply, the required power is obtain thru the output signal.
If you respect the schematic values this audio compressor will output a constant 70mV when the input voltage is between 100mV and 10V !
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Electronic cricket insect sound circuit schematic
Many people like the cricket sound specially if they live in a big town. This electronic cricket sound works in pulses, so the battery life is prolonged, the current consumption is just 2mA.
The electronic cricket schematic is very simple, it is build with CD4049 or CD4009 wich is CMOS Hex Buffers/Converter.
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