1,5V Thermometer (CB21280E)

We found this circuit in old documentation from National Semiconductor. The circuit makes use of a sensor from the time.

8 W amplifier with TDA1037 (CB19160E)
We found this amplifier in a 90's manual. The integrated circuit is not easy to obtain today. The...
1,5V Thermometer (CB21280E)
We found this circuit in old documentation from National Semiconductor. The circuit makes use of a...
Temperature Sensor (CB1591E )
This circuit uses a 6-bit A / D converter from Philips, and has its output compatible with most...