truclacicr
Badcaps Veteran
Last Activity: Today, 11:24 AM
Joined: 04-21-2019
Location: brisbane
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Try to identify the ICs that are powered by the regulator, then examine their datasheets. That should tell you what voltage they expect. -
Could it be a 5.0V LDO regulator?Leave a comment:
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https://[URL]https://www.google.com/...G=Search[/url][URL]https://www.google.com/search?imgtype=photo&q=%22Alpha+%26+Omega%22+T460+OR+BN7515&tbs=isch:1,isz:m&udm=2[/URL]
[url]https://www.google.com/search?q=filetype%3Adoc+OR+filetype%3Apdf+%22absolute%20maximum%22+%22Alpha%20%26%20Omega%22%20T460%20OR%20BN7515&btnG=SLast edited by truclacicr; 04-22-2025, 04:46 PM.Leave a comment:
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It looks like "2Ax".
[url]https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fthrustmaster-t300-rs-need-to-know-the-pinout-of-pcb-v0-4nbydbvazxab1.jpg%3Fwidth%3D2416%26format%3Dpjpg%26auto%3Dwebp%26s%3D5f6535da6ae7dfcb9a011070d2384eedde2911ec[/url]https://It looks like "2Ax".<br /> <...de2911ec[/url]Leave a comment:
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FWIW, Google Images turned up this image ("Panasonic TDC and TLE Series POSCAP capacitors"):
[URL]https://assets.content.na.industrial.panasonic.com/public/styles/large/public/2023-02/Panasonic%20TDC%20and%20TLE%20Series%20POSCAP%20Capacitors%20Photo.png[/URL]
[URL]https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/4805/TLE_Series_POSCAP_DS.pdf[/URL] (TLE datasheet)
N8 = 330uF, H = Lot No.
e = 2.5Vhttps://FWIW, Google Images turned u...hoto.png[/URL]Last edited by truclacicr; 04-18-2025, 06:19 PM.Leave a comment:
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I'm not sure. I guess it would depend on whether the IC allows for a 100% duty cycle on the output, which I doubt.Last edited by truclacicr; 04-16-2025, 08:22 PM.Leave a comment:
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Use a pot to vary VSENSE from 1V to 1.5V, say. When the voltage passes through the hysteresis band (1.20V - 1.25V), the output should switch from off to on, or vice versa.Leave a comment:
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Last edited by truclacicr; 04-10-2025, 02:35 PM.Leave a comment:
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It seems that NTE/ECG went to a lot of trouble to supply a matched complementary pair. This suggests that there must exist a genuine PNP 10262, but obviously not the same one as the OP's. Maybe there is an audio power amp that uses these same numbers for different parts?...Leave a comment:
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https://[URL]https://antiqueradios.c...600.webp[/url][URL]https://antiqueradios.com/forums/viewtopic.php?t=70011[/URL]
I see several listings for SGS versions of the same 10261 and 10262 transistors. This suggests...Last edited by truclacicr; 04-06-2025, 10:32 PM.Leave a comment:
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https://[URL]https://www.sourceresea...e130.pdf[/url][URL]https://www.sourceresearch.com/StoreWork/CrossList.cfm[/URL]
10261 = NTE130 -- NPN 100V 15A TO-3 Audio Power Amp, Medium Speed Switch
10262 = NTE219 -- PNP 100V 15A TO-3 General Purpose Amp and Switch,Last edited by truclacicr; 04-06-2025, 07:13 PM.Leave a comment:
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https://[URL]http://markingcodes.com...to&udm=2[/url][URL]http://markingcodes.com/search/c/4634[/URL]
[URL]https://www.google.com/search?q=filetype%3Adoc%20OR%20filetype%3Apdf%20%22absolute%20maximum%22%204634%20mosfet%20OR%20transistor[/URL]
[url]https://www.google.com/search?q=4634%20mosfet%20Last edited by truclacicr; 03-30-2025, 01:00 PM.Leave a comment:
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If you are struggling to understand the more difficult concepts, then maybe you should try my simple solution and see how it goes. Find an incandescent light dimmer whose rating you can believe, then disconnect the two wires from the food warmer's power switch and connect them to your dimmer. The rest is a physical mounting problem.
The dimmer I found earlier has a claimed rating of 100W, but I don't trust it.Leave a comment:
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I would locate the circuitry that controls the relay and determine what voltage it is sensing when it decides to close the relay's contacts and bypass the inrush current limiting resistor.Leave a comment:
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Sorry, I messed up the link to the datasheet:
[url]https://download.epsondevice.com/td/pdf/app/FC-135_en.pdf[/url]https://Sorry, I messed up the link ...5_en.pdf[/url]Leave a comment:
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It's probably a Seiko-Epson 32.768 kHz crystal.
[URL="https://www.google.com/search?q=32.768khz+fc-135&udm=2&sclient=img"]https://www.google.com/search?q=32.768khz+fc-135&udm=2&sclient=img
https://www.yangxing.hk/u_file/photo/20200107/FC-135-Datasheet.pdf[/URL]It's probably a Seiko-Epson 32.768 kHz crystal.
[URL="https://www.google.com/search?q=32.768khz+fc-135&udm=2&sclient=img"]https://www.google.com/search?q=32.768khz+fc-135&udm=2&sclient=img
https://www.yangxing.hk/u_file/photo/20200107Leave a comment:
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What is the rating of the appliance?
I still think something like this should be OK for 50W continuous:
[url]https://www.aliexpress.com/item/1005005779666984.html[/url]https://What is the rating of the ap...984.html[/url]Leave a comment:
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Incandescent dimmers control a TRIAC by varying the phase angle.
[url]https://www.electronics-tutorials.ws/wp-content/uploads/2013/08/power27.gif[/url]https://Incandescent dimmers control...er27.gif[/url]Leave a comment:
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If you decide to eliminate the DC side of the circuit, or separate it, could you use an ordinary incandescent light dimmer switch? It's not ideal, but it's cheap.Leave a comment:
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