Sensitive magnetic amplifier relay driver |
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| 申请号 | US3579051D | 申请日 | 1969-10-22 | 公开(公告)号 | US3579051A | 公开(公告)日 | 1971-05-18 |
| 申请人 | VAPOR CORP; | 发明人 | OLSEN ROBERT M; | ||||
| 摘要 | Electronic circuit capable of responding to a low signal input including a preamp magnetic amplifier circuit receiving one or a plurality of input signals and conditioned to deliver an output signal upon overcoming a reference signal, a second magnetic amplifier circuit for receiving the output signal of the preamp and conditioned to operate as a switch or as a bistable circuit and thereafter trigger a transistor for operating a relay. | ||||||
| 权利要求 | 1. A relay driver for driving a relay in response to a low signal input comprising, means producing a reference signal, a first magnetic amplifier adapted to receive an input signal and to generate an output signal when the input signal reaches a predetermined level and overcomes said reference signal of opposite polarity, a second magnetic amplifier operating as a bistable amplifier receiving the output signaL of said first magnetic amplifier and generating an output signal, means conditioning said second magnetic amplifier to turn on as the signal voltage of said first magnetic amplifier passes substantially through the zero point, a transistor switch triggered by the output signal of the second magnetic amplifier, and relay connected in series between the transistor switch and a power source to be energized upon triggering of the transistor switch. 2. A relay driver as defined in claim 1, wherein temperature-compensated shunt-regulated means maintains the reference signal stable. 3. A relay driver as defined in claim 1, wherein means is provided ahead of said transistor switch to hold back the output signal of the second magnetic amplifier until it has reached such a level to produce snap-on action of said transistor switch. 4. A relay driver as defined in claim 1, wherein said first magnetic amplifier includes a plurality of input signal windings the sum of which coact to arithmetically produce the input signal. 5. A relay driver for driving a relay in response to a low signal input comprising, a first magnetic amplifier, a second magnetic amplifier, a bias supply, a transistor switch, and an inverter for driving said magnetic amplifiers and said bias supply, said first magnetic amplifier having a plurality of input signal windings, a plurality of control windings connected to said inverter and a bias winding, said bias winding being connected to said bias supply and producing a reference signal which when overcome by the signal input results in the production of an output signal for said first amplifier, said second magnetic amplifier having an input signal winding connected to said first magnetic amplifier to receive the output signal therefrom, a plurality of load windings connected to said inverter, a feedback winding and a bias winding, said bias winding being connected to said bias supply to condition the second amplifier to turn on at a point of minimum drift when the signal voltage of said first amplifier passes substantially through the zero point, said feedback winding providing a sharp turn on-off signal for the second amplifier, means connecting the output of the second magnetic amplifier to said transistor switch, and means connecting said transistor switch to said relay and a power source to energize the relay upon turn-on of the transistor switch in response to a turn-on signal from the second magnetic amplifier. 6. A relay driver as defined in claim 5, and temperature-compensated shunt-regulated means connected to said bias winding for said first magnetic amplifier to maintain the current in same stable. 7. A relay driver as defined in claim 5, wherein the sum of said input signal windings of said first magnetic amplifier coact to arithmetically produce the input signal therefor. 8. A relay driver as defined in claim 5, and means for holding back the turn-on signal from the second magnetic amplifier until it has reached such a level to produce snap-on action of said transistor switch. 9. A relay driver as defined in claim 5, and means internally rectifying said bias supply. 10. A relay driver as defined in claim 5, and means for adjusting the reference signal in the bias winding of said first magnetic amplifier. |
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