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Circuit Bench

Zero Crossing Switch (CB15063E)
This zero-crossing switch circuit triggers an SCR when the input voltage goes through zero. The...
Microphone preamplifier (CB8246E)
This circuit was found in a 1969 Motorola documentation. The FET admits an equivalent. The circuit...
No Capacitor Astable (CB925E)
This circuit without any capacitor operates based in the time the transistor need to turn on. The...