Voltage probe (CB8184E)

Found in a 90s Popular Electronics, this circuit uses general-purpose transistors, serving to indicate the polarity of circuits.

| Clique na imagem para ampliar |

AC Motor Control (CB12330E)
The bridge diodes of this circuit, found in a 1967 publication, are according to the motor...
Trigger with Operational (CB14837E)
This circuit has a very fast switching action from an input signal. It can be applied to almost any...
Debounced Switch (CB1524E)
We find this circuit in a 1978 documentation. The circuit uses two inverters of a 4049 integrated...