Very strong audio spikes in a headset can damage the ear. This circuit, from a 90s Popular Electronics cuts them, being originally indicated to operate with an integrated amplifier of the time.
This circuit was found in July 1986 Radio Electronics magazine. The maximum current is 1.5 A. The...
Found in older American documentation, this circuit is intended for use with analog TV. The active...
Found in a 90’s Popular Electronics, this circuit can use other power MOSFETs. The transformer has a...