This circuit was found in an Elektor from the 90s. The circuit is critical, requiring a very well-planned layout for correct operation.
This circuit was found in a 1977 Signetics manual. The 556 consists of a 555 double and the...
One of the first transistor amplifiers with transformerless output but using a 45-ohm speaker. This...
With this simple converter found in a 1997 documentation, it is possible to tune VHF stations to a...