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 demodulator or decoder for FM stereo signals is from old documentation. The integrated...
This triac temperature control circuit was found in an 80s power semiconductor documentation. The circuit...
This circuit causes two common or bicolor LEDs to alternately flash. The frequency is adjusted in the...