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Many appreciate your kind response.
The CD out signal cable was found which connects the CD PCB to the main PCB board. I have tried to connect a 3.5mm jack cable to the mainboard, of which the output signal does not seem to be amplified highly enough to drive the speaker. A coarse...
Howdo Audioguru
Really appreciate your reply and I am sorry that my concern focus on the reliability. I agree with you that for a Vgs 20V rated device 10V or 20V is acceptable. Because 20V represent standard level device, not logic level, its gate oxide thickness is above 65nm. For IRF part...
Thanks for your thorough reply.
It is a Orion MCT 1563 Unit, https://www.amazon.de/-/en/Orion-MCT-1563-Unit/dp/B000E8M18C and I tried to fix it for a 70 year old retired neighbor - Oliver. His grandson tried to convince him to replace the Orion by a tablet, but Oli prefers the old one -...
Hi Klaus
Do agree with your suggested 4V. But for 10Vgs indicated by Audioguru, I hesitates. Perhaps for consumer electronics, 2-3 year lifetime, it works. But for automotive MOSFET, the concern is raised on its durability. You might find the identical MOSFET in said manufacturer...
Please be aware the gate rating represent the gate oxide thickness that could withstand the maximum Vgs voltage. It does not correlate to the threshold voltage.
Today, to maximise the cost - Rdson, manufacturers reduce the gate oxide thickness. For logic level, Gox used to be 30-40nm...
Please focus on the device itself, rather than the datasheet SOA. The SOA graph is merely a guideline which does not and could not represents the device in your specific application.
1. Just clarify, the SOA graph curve is not measured by manufacturers but for manually plot according to...
I might be able to help on this topic as it is one of my engineered part.
1. IRF has been part of Infineon since 2016. Your parts datasheet is http://www.irf.com/product-info/datasheets/data/jantx2n6770.pdf
2. The n channel power MOSFET is switched on by applying a positive voltage on its...
Thanks, yes, there are switches between CD, Tape, Radio and USB. Unfortunately the USB does not work. Would you please help to spot out which two mount ports on said board, allowing me to connect 3.5 mm Jack cable? Thanks in advance.
To whom it may concern
I am repairing a 18 year old stereo player from Orion, of which the mp3 and USB player does not functional. The main board is shown in the attached photos and my intention is to find the signal input port on said board, allowing the connection to a 3.5mm jack plug cable...
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