This circuit was found in a Texas Instruments documentation from the 1980s. The circuit monitors engine temperature by warning of engine warm-up and warning when the fan is on.
This voice scrambler is used to obtain effects in the 2.5 to 5 kHz range. The circuit is from...
We find this efficient emergency lighting system in a 1987 publication. The circuit keeps a...
The circuit presented is based on the National Semiconductor LM10 operational amplifier, which is not...