Electro Scientific Industries - 250-DA - Analog multimeter
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Electro Scientific Industries 250-DA
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Equipment:
250-DA
Date:
1960
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Information
WHAT THE BRIDGE MEASURES
The ESI Model 250-DA Impedance Bridge measures resistance,
inductance and capacitance. It also measures the dissipation
factor (D) and the storage factor (Q) of inductors and
capacitors.
Resistance measurements are usually made with direct current
because of the increased accuracy and the lack of hum pickup
and stray capacitance effects. Resistance measurements can
be made using ac, but they may require external reactance
compensation.
Inductance and capacitance measurements are made in terms of
a simple two-element circuit with the same impedance as the
unknown. The bridge dials read the values of this equivalent
circuit. An equivalent series circuit is used for capacitors
and low Q inductors; an equivalent parallel circuit is used
for high Q inductors.
1 Manual
Service and user manual
Manual type:
Service and user manual
Pages:
75
Size:
3.1 MB
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
May 11, 2015
MD5:
5a5a5879-bb8c-c9cf-b023-3446fad7af93
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567