This circuit identifies the polarity of DC signals and if the signal is AC. The circuit is from 1969 US EDN documentation. Operational may be equivalent.
This is an application circuit of the Texas Instruments (2019) component datasheet itself. The...
This conventional 12 V power supply stabilized with 2 A current was found in a 1995 documentation. Its...
This simple oscillator with two general-purpose transistors has its frequency given by capacitor...