Output Transformers Tu 0005 - BRUEL & KJAER 1022 Instructions And Applications

Beat frequency oscillator

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OUTPUT TRANSFORMER TU 0005

This transformer is designed to allow symmetrical output from the atten-

uator output of the B.F.O. 1022. (Symmetry better than 0.1%). The out-

put impedance is 600Q and the distortion 0.5% at 20 Hz with maximum

output voltage from the B.F.O. (12.5 V). The accuracy of the Transformer

is ±0.2 dB in the frequency range 10Hz to 35kHz. In addition a core

material has been chosen for the transformer, which makes it possible to

"preload" the secondary winding with a current of 100 rnA without causing

additional distortion for frequencies above 300 Hz. The transformer ratio is

The voltage transmission loss of the transformer when loaded by 600Q is

approximately 16 dB.

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