This simple LDO, or low voltage drop regulator was found in an Electronic Design from the 90s. The circuit uses components from the time.
Using a 4046 PLL this circuit recognizes a 1.6 to 1.8 kHz tone by driving an output LED. The...
This battery charger circuit was found in ancient American documentation. The components are...
This circuit is of great use today, when solar energy is becoming increasingly important. The...