This circuit is from an American 80's documentation. The circuit indicates when the voltage of a 9 V battery drops below 7 V. The transistors can be BC548.
Launched in early 1999, the new ADC12181 high-speed A / D converter is suitable for applications...
This circuit was found in a 2005 Linear Technology application manual. The circuit monitors the...
This circuit is from a Harris Semiconductor datasheet from the 80s. However the circuit can be...