This is a small transistor receiver for the medium wave range made in Japan in the 1960s. The circuit is powered by 9 V and has an output power of 25mW.
The TDA2613 is the mono version of the TDA1521A and has pinouts compatible with an integrated...
This circuit from an old 1978 publication uses germanium transistors but can be implemented with...
This project shows how to use an SCR in a starter circuit for a common fluorescent lamp. The SCR...