SCR Steady Hand (CB22098E)

This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type, for example series 106.

Transistorized Siren (CB9081E)
Found in English documentation from the 1980s, this 3 transistors siren directly drives a small...
Switching regulator (CB8168E)
Found in a Maxim documentation from the 90s, this circuit produces a voltage of 5 V from an input...
Plant soil heater (CB7964E)
This circuit was found in a 90’s 303 Circuits. The components are from the period and the heating...