I.] OPTIONAL ACCESSORIES
D. C. Choke Adaptor. TiPe TM 6113
This enables d. c. currenta up to ZOO mA from an external supp1y to
be passed through inductors under test at 1 kcl s in the range 100 mH to
100 H. It is fitted with spade-ended leads far connecting to the bridge
termina1s. Errors introduced by the Adaptor do not genera11y exceed 3%
and may be eliminated by simple substitution methods.
Isolating Transformer, Type TM 71Z0
This is intended far connection between the bridge and an externa1
a.f. energizing source in arder to keep the bridge isolated from earth.
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