looks alot like [url]https://www.mouser.com/ProductDetail/Vishay-Semiconductors/SIHG40N60E-GE3?qs=EBLjwc9jJJu6KqjjAxRC3w%3D%3D[/url]
600V 40A mosfethttps://looks alot like [url]https:/...00V 40A mosfetlooks alot like [url]https://www.mouser.com/ProductDetail/Vishay-Semiconductors/SIHG40N60E-GE3?qs=EBLjwc9jJJu6KqjjAxRC3w%3D%3D[/url]
600V 40A mosfet
tester272001
Senior Member
Last Activity: 02-21-2025, 06:36 PM
Joined: 04-09-2011
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I agree with Redwire. Did you check all the diodes ? And if you have scope, the IC1A/B pin 7 and pin 1 respectively. there should be signal there if the IC is good. the transistors later are more likely to fail I would think.Leave a comment:
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Re: Bathing PCB's in Ethanol
Ethanol is a great solvent. As long as you let it dry out proper. Ethanol chemically LOVES water and will suck water out of the air and into every nook and cranny of the PCB. just keep that in mind.Leave a comment:
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Re: Repairing a snapped pcb
To add strength. Perhaps use some epoxy like JB weld to glue the component side with some plastic to help prevent flexing.Leave a comment:
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Re: Calculating resistor values in parallel with Caps
I'd suggest you post a picture. Best to try to see if you can read the burnt resistor value. One use of a resistor across a cap is for bleed off the voltage. It would normally be a higher ohmage value. Seeing the component and what is NEAR might help too.Leave a comment:
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Re: I ask some good person for help on "@" character and how to understand the indica
A picture os what you described might help if Harp's answer is not enough for you.Leave a comment:
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Re: Looking for help with wiring schematic please.
I am reasonably sure those arrows mean they connect to each other. It helps to simpify the drawing.Leave a comment:
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Re: tektronix ths720 schematic needed
service manual here:
[url]https://www.tek.com/en/oscilloscope/ths720a-manual/ths710a-ths720a-ths730a-ths720p-service-manual[/url]Re: tektronix ths720 schematic neede...e-manual[/url]Leave a comment:
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Re: MOV question
Hey fellas thanks feor the replies! And Redwire thanks for the link. I will def. go higher rating. The reason this MOV blew is the power company has a tree fall and mst have shorted distribution lines and ZAP. loss of power to an entire area then they reset and this device ia like from the 1980's or 1990's at the latest. So I will go with a good a TMOV as I can find. I amlooking mouser since they have another component I needed for this same device. Its a MAINS filter like this: (spec wise)
KEMET
FAHAV3100ZB000Leave a comment:
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Re: MOV question
I am thinking this is a good fit:
MOV14V130Y
340V clamping 130V AC 57 JoulesLeave a comment:
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MOV question
I have a blown MOV (its RED about the size of a dime) its directly across 120V AC mains. I would think this is a "standard" surge supressor. What is a reasonable component to repalces this? the inline FUSE is 4 amps fast blow. I'd like to still provide some future protection. Any suggestion are appreciated. -
Re: XGecu TL866II Plus not reading and not writing
I am not familiar with that EXACT unit but maybe try to be sure the USB/serial port is properlay set? verify the COM port and the settings / speed - some use a software serial emulation over usb or use an actual SERIAL cable.Leave a comment:
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Re: Help identify a Zener?
WOW! They say lighning never strikes the same place twice, I guess that is NOT true!
...
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Re: AC / DC ADAPTER upgrade?
Start with checking the rating of those MOSFETs that have heatsinks. Then check the transformer rating. Check the DIODEs for their ratings as well. Those are the man components of concern. I am sure Redwire will have some good feedback too! But this should get you started!Leave a comment:
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Re: Help identify a Zener?
Jopat, According to Redwire prior post..."The parts are vanilla switching transistors, anything would work"...I just used parts I had on had or on other unused circuit boards
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Re: ECH81/6AJ8 Vacuum Tube Question
So did AM get better? My thought was that you needed a nie LONG antenna for AM on those old radios! I am curious.Leave a comment:
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Re: Cheapest waterproof RF coaxial connector?
Slather on some liquid electrical tape. that stuff is GREAT. or heat shrink around the entire thing ? Where are you trying to connect at the antenna feed point?Leave a comment:
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Re: Help identify a Zener?
Welcome to the forums Never! sounds like you will have here and also be a great resource!
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Re: ID and Sourcing a Microswitch
or go grab one off an old router or modem or any similar electronics that you might have in the junk box. the reset buttons are same.... its likely SPST momentary contact NO.Leave a comment:
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Re: Video receiver
the LM1889 is used to create an RF that can be input to an antenna of a TV. If you are sending the video from the TDA2549 to RCA and wangt to modulate the video again ( like change the RF frequency to channel 3/4) or the like then you would use the lM2889.Leave a comment:
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