In the figure we have a power supply for tubes, found in a Radio Electronics from 1949.
This circuit of a few tens of milliwatts of power requires a single source. We found it in a Radio...
This circuit has two stable states such that at each instant only one SCR leads. The state change is...
An stable multivibrator with 50% of duty cucle can be mounted using the 555 as shown by the...
