This biestable vox circuit was found in an old documentation. The circuit makes use of components of the time (80's) and can work as a shield since the power is 5 V.
This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time,...
We found this circuit in a Popular Electronics of the 90s. The circuit can also be used as a seat...
This two-digit timer was found in the 1983 Special Projects issue of Radio Electronics magazine. The...