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Search: Posts Made By: petehall347
Forum: Troubleshooting Power Supplies and Power Supply Design Yesterday, 03:59 PM
Replies: 17
Views: 447
Posted By petehall347
Re: ATX PSU SL-500 Short circuit can't find where? Transformer?

throw the safety light bulb away and keep blowing everything up first try .
:poof:
Forum: General Electronics Technical Discussion 08-05-2022, 02:55 PM
Replies: 59
Views: 1,074
Posted By petehall347
Re: Another water pump automation project (suggestions ?)

is it not possible to add a balancing pipe between the tanks ? then it should only need 1 pump and float .
Forum: General Electronics Technical Discussion 08-05-2022, 02:53 PM
Replies: 59
Views: 1,074
Posted By petehall347
Re: Another water pump automation project (suggestions ?)

look possibly a cubic metre .so 1000 litres
Forum: General Electronics Technical Discussion 08-01-2022, 04:14 PM
Replies: 4
Views: 71
Posted By petehall347
Re: Battery Charger - Transformer advice

yes the buzzing is the laminations . i have in the past sprayed lacquer onto the laminations so it runs down into them .
Forum: General Electronics Technical Discussion 08-01-2022, 01:46 PM
Replies: 4
Views: 71
Posted By petehall347
Re: Battery Charger - Transformer advice

firstly tighten the screws up .
Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices 07-30-2022, 05:51 PM
Replies: 3
Views: 139
Posted By petehall347
Re: service tools for Canon mx 495

https://www.youtube.com/watch?v=9SrBzabJj00
Forum: General Capacitor Questions & Issues 07-28-2022, 09:45 AM
Replies: 13
Views: 242
Posted By petehall347
Re: Any good references for variable capacitor design?

i remember adding different capacitors to the earth and the antenna for selectivity and sensitivity .
Forum: General Electronics Technical Discussion 07-28-2022, 09:42 AM
Replies: 23
Views: 396
Posted By petehall347
Re: Samsung battery in Xiaomi

think it must be a mi xiaomi mi 9
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 04:45 AM
Replies: 16
Views: 458
Posted By petehall347
Re: Samsung UN55ES7003 has blown fuse on TCON and short to ground.

http://j5d2v7d7.stackpathcdn.com/wp-content/uploads/2016/08/4435-datasheet-pinout.gif
Forum: General Electronics Technical Discussion 07-26-2022, 04:15 AM
Replies: 5
Views: 145
Posted By petehall347
Re: Help with IC identification please

can you find the lump that blew off ?
Forum: General Capacitor Questions & Issues 07-24-2022, 06:58 PM
Replies: 13
Views: 242
Posted By petehall347
Re: Any good references for variable capacitor design?

wish i still had the book i used all them years ago .. all simple stuff really . i used to try different windings around a ferrite core and capacitors connected to an external antenna for selectivity...
Forum: Troubleshooting TVs and Video Sources 07-24-2022, 03:45 PM
Replies: 2
Views: 218
Posted By petehall347
Re: Samsung TV UN55KS8000 dead - bad diode

if diodes are working parallel i change all of them and match vf . they really need to work together .. silly idea to run parallel to up the current really .be better with single bigger diodes . well...
Forum: General Capacitor Questions & Issues 07-24-2022, 11:21 AM
Replies: 13
Views: 242
Posted By petehall347
Re: Any good references for variable capacitor design?

when i was building crystal sets i knew nothing about pf values i just threw them together and they worked fine . i did however know the differences of am and fm tuners though .
Forum: General Capacitor Questions & Issues 07-24-2022, 07:59 AM
Replies: 13
Views: 242
Posted By petehall347
Re: Any good references for variable capacitor design?

try searching tuning capacitor on ebay and google .. i see an an abundance of them
Forum: Troubleshooting Audio Equipment 07-20-2022, 06:36 PM
Replies: 3
Views: 135
Posted By petehall347
Re: what is the suitable alternative for transistor A1941

you should be able to find a genuine one with that number
Forum: General Electronics Technical Discussion 07-20-2022, 06:33 PM
Replies: 25
Views: 346
Posted By petehall347
Re: Queen coffee CQ MN-2 Heating element

that's like 42 amps .must have its own circuit .
Forum: General Capacitor Questions & Issues 07-20-2022, 10:59 AM
Replies: 26
Views: 662
Posted By petehall347
Re: Blown cap on old dwell gauge - kal equip 2851

that transistor looking thing might be shorted ..best check its id number then test it .
Forum: General Capacitor Questions & Issues 07-20-2022, 10:57 AM
Replies: 26
Views: 662
Posted By petehall347
Forum: General Electronics Technical Discussion 07-20-2022, 08:40 AM
Replies: 25
Views: 346
Posted By petehall347
Re: Queen coffee CQ MN-2 Heating element

2300w element should be about 25 ohms
Forum: General Capacitor Questions & Issues 07-20-2022, 03:02 AM
Replies: 26
Views: 662
Posted By petehall347
Re: Blown cap on old dwell gauge - kal equip 2851

looks like a track got burned through .
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-16-2022, 10:25 AM
Replies: 2
Views: 126
Posted By petehall347
Re: 907A knockoff soldering handle voltage

is that voltage unloaded ?
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2022, 06:24 PM
Replies: 5
Views: 278
Posted By petehall347
Re: what is this symbol on tvs diode ?

1.5KE18CA is bi-directional, according to the datasheet .
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-15-2022, 01:16 PM
Replies: 10
Views: 303
Posted By petehall347
Re: GNB 2100LP industrial battery charger

silicon controlled rectifiers ..thyristors
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2022, 12:39 PM
Replies: 5
Views: 278
Posted By petehall347
Re: what is this symbol on tvs diode ?

that's what i was thinking thanks
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2022, 09:04 AM
Replies: 5
Views: 278
Posted By petehall347
what is this symbol on tvs diode ?

can't figure out this strange symbol
can see its a 1.5ke series but its the next bit . 1?ca .. is it an 8 i wonder ?
Showing results 1 to 25 of 500

 
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