This circuit was obtained from Motorola documentation from 1969. The setting applies to other operating systems, including lower supply voltages. The zener determines the output signal.
This circuit was found in Maxim's documentation from the 80's. The integrated circuit is from that...
This circuit generates a sinusoidal signal with only -80 dB THD. The circuit was found in a 90's...
We found this sensitive moisture detector in an old documentation. The circuit uses a common JFET,...