Amplifiers – Modulator-demodulator-type amplifier
Patent
1976-07-23
1978-01-03
Dahl, Lawrence J.
Amplifiers
Modulator-demodulator-type amplifier
128 206B, 330165, 330199, H03F 338
Patent
active
040669742
ABSTRACT:
There is disclosed an isolation amplifier having an input amplifier, an output amplifier, a transformer having primary and secondary windings, an alternator connected to the secondary winding of the transformer for alternately presenting a voltage and a high impedance to the secondary winding, a first switching device connected between the primary winding of the transformer and the output of the input amplifier for connecting the output of the input amplifier to the primary winding when the alternator presents a high impedance to the secondary winding and for disconnecting the output of the input amplifier from the primary winding when the alternator presents a voltage to the secondary winding and a second switching device connected between the secondary winding and the input to the output amplifier therefore connecting the input of the output amplifier to the secondary winding when the alternator presents a high impedance to the secondary winding and disconnecting the input of the output amplifier from the secondary winding when the alternator presents a voltage to the secondary winding. There is further disclosed a coupling circuit between the primary of the transformer and the input to the input amplifier and a rectifier circuit connected to the input of the input amplifier for causing the input amplifier to go into lock-up when the input to the input amplifier is disconnected from a source of signal.
REFERENCES:
patent: 3754193 (1973-08-01), Reinhard
patent: 3988690 (1976-10-01), Vance et al.
Dahl Lawrence J.
Madsen Raymond L.
The Birtcher Corporation
LandOfFree
Isolation amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Isolation amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isolation amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-283423