This circuit is from a technical documentation on the National Semiconductor LM3909. The tripping transformer has a 1:1 turn ratio and the circuit is powered with 5V.
Using the HA2400 this circuit has its output voltage digitally programmed from the references...
Assembled with SMD components this circuit can be very small. The range is a few tens of meters. We...
This circuit can be used as a shield when its supply is 5 V. in this case we can exchange the...