This circuit maintains on a flashing LED at a frequency determined by the capacitor. The unijunction transistor can be 2N2646.
This high-performance circuit was found in the 1982 SGS Linear Integrated Circuits Manual. The...
This circuit for audio applications was found in an English magazine from the 80's. The circuit...
The circuit presented uses an integrated circuit Sanyo, not very common in our day. This amplifier provides...