Electronic scale (CB7906E)

Using components of the time, this 3 and half digit scale was found in an Electronics Now from the 90s. The circuit is powered by a 9 V battery.

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Non-linear amplifier (CB24008E)
In this circuit the gain decreases as the input signal intensity increases. The circuit is from a...
Programmable Twin T Band Pass Filter (CB6244E)
This circuit was found in an American 1980s documentation. Dual FETs can be replaced by single...
HDC1010 Digital Humidity Sensor (COM087E)
September 2016 - Mouser Electgronics already has in stock the new moisture digital sensor HDC1010...