Looking for a circuit__12 vdc to 475 to 500 vdc at about 400 mils, any body have one? To be used for photoflash(cap charging).
-
-
Re: Dc to dc
If you want to learn how to design it, have a look here:
36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far.... -
Re: Dc to dc
That's almost 200W... for charging up the cap.
One possibility is to use a car inverter (12-120VAC, or better 240VAC) for parts or entirely. They'll have a 170VDC (340VDC) bus.
The latest flash circuits use Linear Tech chips like LT3751, some with IGBT flash duration control.
Coilcraft offers HV transformers to go with the chip. Hope this gives you some ideas.
There's a lot of (older) strobe information here: http://donklipstein.com/samflash.htmlComment
-
Re: Dc to dc
This tutorial is excellent, explains how camera flash circuits work in detail and how you can modify them for other things like powering nixie tubes:
part 1 http://www.youtube.com/watch?v=8YuDlhMMIaw
part 2 http://www.youtube.com/watch?v=4qNt3RlscZg
part 3 http://www.youtube.com/watch?v=RziYdY1ovsMComment
-
Re: Dc to dc
400mils? you mean 400mA?
Cameras that I have taken apart have a tiny step up transformer, usually about 1cm x 1cm x 1cm in sizeMuh-soggy-kneeComment
-
Hello everyone.
I have a device that is used to shape the human body muscels and burns fat. Works on the principle of electromagnetic impulses. One thyristor in side is shorted which has only this unknown mark on it ( QC230301 ). I can't find any information about it anywhere on the Internet. I tried to replace that thyristor with one of 1.6kv 800A and after 5min. of work he has burned out again, which means that he is probably weak. There is no schematic diagram on the internet, but that didn't suprise me because all the transistors and chips that are on the boards have their markings... -
Hello Everyone,
I have 1 diode on a circuit that I suspected to be faulty because the forward and reverse bias has a voltage drop reading.
While compared to the reading of another diode from the next channel it won't read at reverse bias.
Now the problem is; it does not have any body marking.
So I tried to sketch the diagram and found out that it is connected to the base and collector of the C3632 transistor.
What do you think is this diode?
Can you please suggest what part number can i use to replace this faulty diode instead?
Hoping that you... -
Lbb-2 mb 19773-1 448.0jh02.0011 schhematics and brd any body PLEASE
X 13 Yoga serial R9-1174FW -
hi there pleas iam looking for schematic and boardview for 820-01823
or
Apple iMac A2115 051-04826 820-01823 051-04705 820-01779 Schematic.PDF and BoardView.BRD02-26-2024, 08:59 AM -
can any body help in toshiba c850 plf/plr/csf/csr uma mb rev 2.1no power
i found 19 v vin and 3v & 5 v on coils
3.3 bios - 3.3 on power switch
i programed another bios chip and nothing changed
Comment