This bridge circuit is designed for 8-ohm speakers delivering a few watts of power. The circuit is from a Radio Electronics from March 1990.
This metal detector circuit uses an AM radio as an indicator. The radio is placed off-station and tuned...
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...
This simple measuring bridge allows the capacitance m of some pF to microfarads to be measured...