Found in a 90’s Electronic Engineering, this circuit detects the lack of phase in the supply of a three-phase load, powering a cut-off system.
The circuit shown causes two LEDs to alternately flash at a frequency given by the capacitor. The...
The transistor can be a modern equivalent and the transformer is the type of output found on an...
This circuit is ideal for recovering vinyl media with a linear response from the RIAA curve of the...