This circuit generates pulses whose frequency depends on C1. The circuit can be powered by voltages from 5 to 15 V. We find this configuration in a Signetics manual.
This circuit is from a 1977 Signetics manual. BC107 transistors can be replaced with BC547 and...
This variable power supply circuit was found in a German publication from the 1980s. The circuit is...
This simple control circuit was found in American documentation from the 1990s. | Clique na imagem...