This high impedance headphone amplifier was found in American documentation from the 1990s. Any general-purpose FET can be used.
This circuit makes use of an old Texas Instruments component. The buzzer is also from the era. The...
September 2016 - Mouser Electronics already has in stock the new IC TPS92515 LED driver from Texas...
This circuit has an automatic dynamic gain control in a range of 6 dB to 40 dB. We found it in...