This circuit was found in a 2005 Linear Technology component manual. The circuit is full bridge and can operate on bridges up to 75 V. The circuit power is 5 V which allows its use as a shield.
We found this circuit in an old documentation for hams. In it we have the way to use a varicap to...
Found in an 80's documentation this circuit uses an integrated from the uncommon era today. Other...
This circuit is stabilized by a thermistor or NTC with a resistance between 2 and 5k. The signal is...