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Jensen Transformers JT-13K7-A
1:5 Microphone Input Step-Up Transformer with Clamp-style Mount and Wire Leads
Jensen Transformers JT-13K7-A 1:5 Microphone Step-Up Transformer
The Jensen Transformers JT-13K7-A is a microphone input transformer with a 1:5 step-up ratio, making it ideal for medium impedance amplifiers.
Microphone preamp designs incorporating Jensen Input Transformers offer several
advantages over the more commonly used, inexpensive "transformerless" designs:
1) Superior Common Mode Interference Rejection
2) Superior Radio Frequency Interference Rejection
3) Ideal impedance matching of source to amplifier
4) Elimination of input coupling capacitor distortion
Jensen manufactures Microphone Input Transformers in many step-up ratios in order to
provide the best possible noise performance with any type of active amplifier device.
The JT-13K7-A is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Jensen Transformers' Description
Jensen Transformers JT-13K7-A
MICROPHONE INPUT TRANSFORMER
1:5 STEP-UP FOR MEDIUM IMPEDANCE AMPLIFIERS
- Our best input transformer for most popular IC amplifiers
- wide bandwidth: -3 dB at 0.9 Hz and 120 kHz
- 13.8 dB voltage gain with transformer Noise Figure of only 1.0 dB
- Input impedance of 1.5 kΩ for loading loss under 0.9 dB
- High common-mode rejection: 119 dB at 60 Hz
With its 4.1 kΩ secondary source impedance, this transformer not only optimizes
noise performance of many IC or discrete amplifiers but also offers excellent
CMRR as well. The primary is fully balanced and its leads may be reversed to
invert polarity, if required. A 30 dB magnetic shield package is standard.
Here the JT-13K7-A is shown in the included mounting clamp. The wire leads can also be seen in this photo.
This shows the bottom of the transformer
Shown here are the included items
Here is the JT-13K7-A spec sheet. PDF format.
Why Cable Solutions?
- Cable Solutions is an Authorized Jensen Transformers Distributor, so our customers are ensured full warranty protection and technical support. (Jensen Transformers is obligated to provide neither warranty nor technical support for products purchased from unauthorized resellers!)
- We stock this item locally so that it will be ready for immediate shipment, and no one works harder than we do to get your order shipped out to you fast! On business days, orders that are funded by noon will ship the same day. Orders funded on weekends or holidays will ship the next business day.
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