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Electronic Schematics (alt.binaries.schematics.electronic) A place to show and share your electronics schematic drawings. |
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#1
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This is the device, showing the ferrite ring and mettallic post, housed in
plastic but all out of focus. Best I could do... Wonder how long this one will last. Dave |
#2
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"Dave" wrote in message netamerica... This is the device, showing the ferrite ring and mettallic post, housed in plastic but all out of focus. Best I could do... Wonder how long this one will last. Dave Dave, is this connected to two leads coming out of the transformer? If not how is it connected? Mike |
#3
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Enhanced somewhat and shrunk down - at least you can kinda see Abe's
shoulder on the penny... Are you using a camcorder? You can stick a desk magnifier halfway between the lens and the object to give yourself a cheapo macro. Leave the zoom setting on Wide. MJM "Dave" wrote in message netamerica... This is the device, showing the ferrite ring and mettallic post, housed in plastic but all out of focus. Best I could do... Wonder how long this one will last. Dave |
#4
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Hey Mike,
Yes, to two leads coming out of the transformer. There are two of these things, one with heavier blue leads, and the other with lighter white leads. Whatcha thinkin'? Dave "amdx" wrote in message ... "Dave" wrote in message netamerica... This is the device, showing the ferrite ring and mettallic post, housed in plastic but all out of focus. Best I could do... Wonder how long this one will last. Dave Dave, is this connected to two leads coming out of the transformer? If not how is it connected? Mike |
#5
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". Dave, is this connected to two leads coming out of the transformer? If not how is it connected? Mike Hey Mike, Yes, to two leads coming out of the transformer. There are two of these things, one with heavier blue leads, and the other with lighter white leads. Whatcha thinkin'? Dave Hey Dave, I'm not sure, I thought maybe a thermal fuse. Many small transformers have a thermal fuse wired inside to protect against overheating. Why they would bring the leads out and mount the proector on the back panel I don't know. Also, since you say it has two of these devices, I'm at a loss. How does it measure? Very low ohms both directions? Mike |
#6
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"amdx" wrote in message ... ". Dave, is this connected to two leads coming out of the transformer? If not how is it connected? Mike Hey Mike, Yes, to two leads coming out of the transformer. There are two of these things, one with heavier blue leads, and the other with lighter white leads. Whatcha thinkin'? Dave Hey Dave, I'm not sure, I thought maybe a thermal fuse. Many small transformers have a thermal fuse wired inside to protect against overheating. Why they would bring the leads out and mount the proector on the back panel I don't know. Also, since you say it has two of these devices, I'm at a loss. How does it measure? Very low ohms both directions? Mike Actually, it measures several megohms, with one way being more than the other, I believe (seems like it was 11M one way and 7M the other) . Will have to check it again to confirm that last part, but that's what I seem to remember from this afternoon. I do know that it checks like a diode, with one direction being .879V and the other .397. What I can't figure out are the ferrite rings around the metallic posts. sigh Oh, and I have worked with thermal fuses before, and this doesn't appear to be anything like that. I *think* they are diodes, similar in function to selenium rectifiers, but much higher current. Dave |
#7
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Dave wrote:
snip I do know that it checks like a diode, with one direction being .879V and the other .397. That's not how a diode measures. One direction should measure open on the diode test range, the other low, like the .397 reading you got. If you measure it in circuit, then the readings can depend on the other elements in the circuit. If that was the case (measured in circuit) remove one wire and measure again. Ed What I can't figure out are the ferrite rings around the metallic posts. sigh Oh, and I have worked with thermal fuses before, and this doesn't appear to be anything like that. I *think* they are diodes, similar in function to selenium rectifiers, but much higher current. Dave |
#8
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"ehsjr" et wrote in message news:xO97k.224$zE6.87@trnddc02... Dave wrote: snip I do know that it checks like a diode, with one direction being .879V and the other .397. That's not how a diode measures. One direction should measure open on the diode test range, the other low, like the .397 reading you got. If you measure it in circuit, then the readings can depend on the other elements in the circuit. If that was the case (measured in circuit) remove one wire and measure again. Ed Hey Ed, Well, maybe like a faulty diode. Or like something meant to act like a diode, but which doesn't do it's job quite right. It was checked out of circuit, BTW. Thanks for the interest. D |
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