Reverse power protection circuit and relay
OwnerRoger R. Graeber, Grant D. Marr +1inventors
InventorsRoger R. Graeber, Grant D. Marr, Darrell H. Richardson
Life of this patent
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Abstract
A relay for high frequency instruments and a reverse power protection circuit for high frequency instruments are described herein. The relay is inexpensive to construct, permits good impedance matching up to approximately 5 GHz, and can be easily mounted on a coplanar waveguide transmission line. The circuit can open the relay in response to a reverse power condition in as little as 8 microseconds and provides both good grounding and functions reliably up to 4 GHz.
Claims4
A relay for high frequency instruments, the relay comprising:
- a cylindrical glass reed switch with switch leads;
- an elastomeric conductive tube surrounding the glass reed switch;
- a conductive metal grounding shield, the shield surrounding the elastomeric tube and further having a lengthwise slot and two extended grounding contacts at both ends of the shield, the grounding contacts being coplanar with the switch leads;
- electro-magnetic coil assembly with central axial opening, the combination of the switch, tube, and shield being inserted through the axial opening and extending beyond both ends of the coil assembly;
- and
- outer housing, the coil and combination of the switch, tube, and shield being inserted into the housing and fixed therein by a potting material, the grounding contacts and switch leads extending from the housing.
A relay for high frequency instruments, the relay comprising:
- a cylindrical glass reed switch with switch leads;
- an elastomeric conductive tube surrounding the glass reed switch;
- a conductive metal grounding shield, the shield surrounding the elastomeric tube and having a lengthwise axial slot and two extended grounding contacts at both ends of the shield;
- electro-magnetic coil assembly with central axial opening, the combination of the switch, tube, and shield being inserted through the axial opening and extending beyond both ends of the coil assembly;
- and
- outer housing, the coil and combination of the switch, tube, and shield being inserted into the housing and fixed therein by a potting material, the grounding contacts and switch leads extending from the housing.
Dependencies are inferred from the claim text.