This circuit was found in a 1966’s American publication. What it does is to receive a pulse and keep it for intervals of up to 1 minute at the output.
We found this circuit in an old Mullard (Philips) documentation. The load must be according to the...
The LM381 integrated circuit is not very common today. The circuit is from an old publication, but it can be...
We found this circuit in a 1998 publication. The circuit has controls for both frequency and...