Found in a 1968 American documentation, this circuit generates sawtooth signals whose rise and fall times are determined by C1 and C2. Transistors support modern equivalents.
We found this circuit in a Popular Electronics of the 90s. The circuit still uses light bulbs, but...
This circuit is from Linear Technology 2005 documentation. The circuit is based on company...
The integrated circuit used in this power supply is no longer very common in power supplies today....