Рет қаралды 254
led blinking circuit
components -
bc547 transistor
bd139 transistor
100 uf capacitor
10 uf capacitor
10 k resistors - 2
1 k resistor
how to make amplifier -
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how to make 4558 low pass filter circuit -
• 4558 ic එකෙන් සුපිරිය...
how to make pcb
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electronic vishvaya