This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
This circuit uses only passive components and the instrument can be a microammeter or the lowest...
A new version of the previous circuit triggered by the negative transition of the input signal is...
This simple voltage regulator or stabilizer uses only two component and can source up to 100 mA to a...