This type of circuit and with this integrated circuit appears several times on this website. The circuit has the components dependent on the desired current in the load.
Found in an American publication from 1968, this circuit generates pulses at a rate of 2,500 per...
The transistors on this circuit can be the BC548. The circuit is from English documentation from...
In the figure we have a stereo decoder from the 70's with pilot lamp for signal indication. The...