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Scanning signal balancing circuit

  • US 4,628,201 A
  • Filed: 02/27/1984
  • Issued: 12/09/1986
  • Est. Priority Date: 03/05/1983
  • Status: Expired due to Fees
First Claim
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1. In a digital position measuring system of the type comprising a measuring scale, a scanning unit including at least one scanning element positioned to scan the scale and to generate in response thereto a scanning signal, and an evaluating circuit coupled to the at least one scanning element to evaluate the scanning signal, the improvement comprising:

  • a balancing circuit coupled to the measuring system and comprising;

    at least one bridge circuit; and

    at least one balancing element for balancing at least one signal parameter of the scanning signal, said balancing element included in the bridge circuit;

    said bridge circuit defining a first pair of diagonal nodes circuited parallel to the at least one scanning element in the scanning unit.

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