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Your cart is empty. BOJACK Audio transformer Specifications:
MODEL:EI-14
Voltage ratio: 1:1
Inductance : 290mH (±20%)
DC resistance : 135 Ohm(±1%)
AC impedance : 600 : 600 Ohm
Moisture-proof mode: open
Cooling mode: oil immersed air cooled
Frequency characteristics: intermediate frequency
Appearance structure: vertical
Lead-Free / RoHS Compliant Electronics Component.
This product is widely used in product development, student experiments, maintenance, production, etc.
SomeGuyWithManyHobbies
Reviewed in the United States on September 11, 2024
600:600 versionI'm using these in a DIY direct box for a stereo mic (AT822). The mic brings the 2 unbalanced signals out on an XLR connector as ground, left, right (1, 2, 3), and has a specialized cable to break the 2 signals out into individual 1/4" plugs. These x-fmrs are used to convert that unbalanced signal into 2 balanced signals, in a single box, with the single XLR input - rather than needing to bring 2 identical DI boxes and the custom cable everywhere.For the price, I wasn't expecting it to sound as good as it does. There is no noticeable difference in the audio. Keep in mind that this is with a mic level signal. I have not tried these with a line level signal (or anything hotter for that matter).HOWEVER, don't bother trying to pass DC through these. I tried using this x-fmr in a class A tube circuit (12AX7 preamp), and although the tube was drawing barely 0.5mA, the core saturated and there was no bottom end below about 500Hz. So AC signals only for this one folks.
Bennet
Reviewed in the United States on May 27, 2024
-0.3 dB loss through most of the audio range at around 0 dBm. Increases to -0.7 dB at 125Hz and up to -3.2 dB at 20Hz. Used it to add an isolated balanced audio output to a Boss Katana MKII amp. Might be a bit sus mechanically, would work best if soldered into a PCB. Other than that, a great little 600-600 xformer.
JB
Reviewed in the United States on March 4, 2024
These transformers are no good for audio, tinny and distorted. Avoid.
Bump
Reviewed in the United States on March 15, 2024
I used 6 in a home built, 6 channel, ground loop isolator. Output seems as good as it does without it.
JB
Reviewed in the United States on May 25, 2023
I use these to eliminate common mode noise in audio. Works as it should. I will buy more in the future,
Tai Hong Yi
Reviewed in the United States on February 4, 2023
It has a sufficient audio frequency response. It has high efficient quality in that bandwidth. But because of its small size in the lower frequency around 20Hz, it has a little distortion.
RLFL
Reviewed in the United States on June 20, 2020
I used them to isolate a ham radio's audio input and output lines from a usb soundcard. Seem fine. The copper windings seem shiny, pins matched the perfboard pitch, weren't fragile, etc.
CA Cycleworks
Reviewed in the United States on April 27, 2020
Great little signal transfer transformers. I tried to source them via the supply channels people would normally use for components and either they are difficult to find via specs or those companies don't offer these. I even wrote their support - didn't think to check Amazon first. Of course they are here!I used this to act as a signal transfer transformer to trigger a device from this and this transformer is the only means I was able to convey the digital output from the ESP to the other circuit.
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