Transformer Coupled AC Switch (CB25075E)

This triac circuit was found in the October 1987 Radio Electronics magazine. The triac is load-dependent and must be mounted on a heat sink.

| Clique na imagem para ampliar |

Direct Reading Capacítancemeter (CB3885E)
We find this circuit in American documentation from the 1980s. The accuracy of the circuit depends on the...
Non-Inverter Amplifier LM139 (CB14247E)
The presented circuit uses a symmetrical power source to supply an amplifier with the LM139 or...
5 W Audio Amplifier (CB467)
High quality sound can be obtained from this transistor amplifier. The output transistors must be...