I would like to know what you guy think about this power supply
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Re: Bought a new 5 volt @5 amp power supply
I see they left out the parts for the crowbar overvoltage protection circuit.Machina improba! Vel mihi ede potum vel mihi redde nummos meos! -
Re: Bought a new 5 volt @5 amp power supply
Other than that is it a well built power supplyLast edited by sam_sam_sam; 04-03-2015, 08:44 PM.Comment
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Re: Bought a new 5 volt @5 amp power supply
So dose that mean that I need to add a 5 volt Zener diode in the power cable to what ever unit I going to use this power supply on
What parts would I need for the crowbar overvoltage protection circuit to work right [ if this can be done ]Last edited by sam_sam_sam; 04-03-2015, 08:48 PM.Comment
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Re: Bought a new 5 volt @5 amp power supply
ok other than cheap caps and no crowbar.you would need a scr too.i would use 6.2v zener.Comment
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Re: Bought a new 5 volt @5 amp power supply
SCR1, ZD3, and R16 appear to be the missing components for the crowbar circuit.Last edited by lti; 04-04-2015, 11:24 AM.Comment
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Re: Bought a new 5 volt @5 amp power supply
I know that for ZD3 is going to be a 5.5 or a 6 volt
And for R16---->500 to 1000 ohms
Could I use this for ZD3
http://www.digikey.com/product-detai...FSTR-ND/977219Last edited by sam_sam_sam; 04-04-2015, 12:09 PM.Comment
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I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
I have bought computer switching power supplies from Electronic Goldmine before and every one of them the capacitors were bloated and or leaking out of the capacitors so I am sure that these are going to be the same way five or six years ago I had bought some 300 and 350 watt computer switching power supply from Electronic Goldmine these are all from FSP brand
Here is the listing for this switching power supply they only had three of them in stock and I bought all three of them
https://theelectronicgoldmine.com/products/g28149
I have one old computer that...
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