Signal Processing Systems : Audio Transformers : Jensen Transformers, Inc. - JT-MB-CPC

Microphone Bridging Transformer with 0.036% Distortion Ratio, Dual Faraday Shields for High Isolation

Model: JT-MB-CPC

Provides additional, isolated balanced output as mic splitter
Solves transformerless preamp problems when used as retrofit
High common-mode rejection 130dB at 60Hz
Excellent frequency response and time domain performance
Low insertion loss 0.8dB

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Microphone bridging transformer is designed to be driven from a 150ohms microphone source and loaded by the typical 1kohms input impedance of microphone preamplifiers. It can be used with balanced or unbalanced sources and/or loads since both primary and secondary are fully balanced. A 30dB magnetic shield package is standard.

Provides additional, isolated balanced output as mic splitter
Solves transformerless preamp problems when used as retrofit
High common-mode rejection 130dB at 60Hz
Excellent frequency response and time domain performance
Low insertion loss 0.8dB

Audio Transformer Type - Isolation Transformer
Spec Sheet available - Yes

Input Impedance: 1.08 kohms (1kHz, -20dBu, test circuit 1)
Voltage Gain: -0.82 dB (1kHz, -20dBu, test circuit 1)
Deviation from linear phase (DLP): +1.7/-0 ° (20Hz to 20kHz, -20dBu, test circuit 1)
Distortion (THD): 0.05 % (20Hz, -20dBu, test circuit 1)
Maximum 20Hz input level: -2.0 dBu (1% THD, test circuit 1)
Common-mode Rejection Ratio (CMRR) 150ohms Balanced Source: 130 dB (60Hz, test circuit 2)
Common-mode Rejection Ratio (CMRR) 150ohms Unbalanced Source: 115 dB (60Hz, test circuit 3)
Output Impedance: 250 ohms (1kHz, test circuit 1)
Primary DC resistances: 50 ohms
Secondary DC resistances: 50 ohms
Capacitances at 1kHz: 87 pF (secondary to shield and case)
Turns Ratio: 1:10.0
Breakdown Voltage: 250 Vrms (primary or secondary to shield and case, 60Hz, 1 minute test duration)
Operating Temperature (Maximum): 158 F
Operating Temperature (Minimum): 32 F

Microphone Bridging Transformer 189 kb - Data Sheet

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Microphone Bridging Transformer with 0.036% Distortion Ratio, Dual Faraday Shields for High Isolation

Model: JT-MB-CPC

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