Indicated by Popular Electronics to be used with a car headlight, this circuit can also have applications in fixed signaling. The power MOSFET must be in accordance with the lamp.
This circuit is from an American documentation about filters. The operational amplifiers are 741...
A 25 mVpp applied to the input of this circuit produces in the output a 1 Vpp signal. The...
This traditional triplier configuration with the 555 can be found in other articles on the...