This circuit was published in a 90s Radio Electronics. The circuit uses the well-known LM386 that appears in a large number of projects on this site.
This common emitter amplifier with 43 dB gain was found in the August 1970 issue of Radio...
This circuit was found in a technical documentation from Texas Instruments, using a...
We found this circuit in a 1980 publication. It can be applied to Triacs of the TIC series and the...