A simple pressure switch with a range of 50 to 350 bar can be made using a pressure sensor. If you can accept somewhat reduced linearity, the sensor can even be used up to 500 bar. As shown... Read more
This design can be used to simulate millivolt (mV) sensor signals for industrial control systems. Most of the new sensors used today include some form of ‘intelligence’ at the measurement he... Read more
When the environment is hot in the heat sensitive circuit, the voltage on the NTC decreases. T2 switches to cut, T1 switches to transmission. Relay contacts change position. When the environ... Read more
National Semiconductor’s LM334Z is a temperature-dependent adjustable current source supplied in a plastic TO-92 package. In Fig. a 226 Ω resistor, R1, is used to set a current gradie... Read more
