The circuit shown consists of a power stage for relay excitation. 2N3053 can be a BD135 and 2N406 can be replaced with a BD136. R3 depends on the trigger voltage.
This 1960s Japanese 5-transistor radio is powered by 9 V and has good sensitivity for the medium...
This circuit doubles the input voltage, converting, for example, 6 V and 12 V. The output current is...
Based on a Texas Instruments OPA237 and DRV101 operational, this circuit allows control of a motor...