Found in a manual of integrated circuits from the 90s, this circuit makes use of that time components. It is indicated to limit the current in 6 V chargers.
This very simple 1-transistor oscillator is from Raytheon's transistor manual of the 60s. The...
This circuit is from a 1957 Raytheon transistor manual. The diode can be of general-purpose...
We have in the figure an ultra-simple alarm found in a 1981 publication. As the author indicates, it is...