With an 18 V input, this regulator was found in Philips documentation from the 60's. The transistors are from that time. The power transistor must have a heatsink.
Two potentiometers mounted at right angles, so that they can be operated by a lever, form a very...
The purpose of this modified astable is to make the initial pulses have the same duration as the...
This circuit was found in an American 80's circuit board. The components used are current except the...