how to discharge giant cap

[Superidgit]

where can i get a lighted green rocker switch to replace? if you can find on eBay or even better google shopping.

Thats a tuff one morse I just searched my favorite supplier and Nada.


Rocker Switches and other Rocker Switches & Accessories at MSCDirect.com.


also my other fav spot


Search rocker - Grainger Industrial Supply


If a compqany thats make 4 billion a year trusts those two service providers ... I think ill trust them too.

 

[Se7en]

Thats a tuff one morse I just searched my favorite supplier and Nada.


Rocker Switches and other Rocker Switches & Accessories at MSCDirect.com.

yea i went and bought one for 5$ but i didn't realize the bulb inside was 12v and it blew out lol
p.s im draining the caps with a 100ohm 10w resistor
i could go to walmart and buy a ac wall extender with 3 plugs and robb the switch from it and use the green cover from my old switch?

 

[Superidgit]

yea i went and bought one for 5$ but i didn't realize the bulb inside was 12v and it blew out lol
p.s im draining the caps with a 100ohm 10w resistor
i could go to walmart and buy a ac wall extender with 3 plugs and robb the switch from it and use the green cover from my old switch?

you know ... except from stealing it Morse I dont see why not.

 

[Se7en]

you know ... except from stealing it Morse I dont see why not.

what does that mean?

i guess these days certain electronic items are just not for-sale anymore due to low demands?

 

[Se7en]

All done. Just need to do the pyramid green. Found a shop called electronic expeditors in camarillo,CA the switch was $3.15

Sent from my DROIDX using Tapatalk

 

[Happy_Hamer]

so the bulb in the switch was 110V ?

 

[Se7en]

so the bulb in the switch was 110V ?

yes sir

 

[Eastside]

I would not stake my life on this....but won't a power supplies caps discharge if you unplug the unit while its running?

 

[Se7en]

I would not stake my life on this....but won't a power supplies caps discharge if you unplug the unit while its running?

id say it depends. while my 14a power supply discharges after unit is unplugged, the caps inside the astron 50a Do not discharge on there own. now im sure over years of sitting they will discharge. i discharged them before replacing the switch, unscrewed the wires from the caps to the circuit board and hit them with a 100 Ω 1 W resistor a tad bit of sparking but it discharged quick and no problems.

 

[Beetle]

It's surprising how few Astron power supplies have bleeders installed at the factory. I put them in my RS-35s even before I actually put them to use, and I've been satisfied with the result.

 

[Robb]

It's surprising how few Astron power supplies have bleeders installed at the factory. I put them in my RS-35s even before I actually put them to use, and I've been satisfied with the result.

You mean a wired in 'bleeder RESISTOR'?
From the "+" of the filter cap to ground?

 

[Beetle]

Yep. I've only heard them called "bleeders". In context, the "resistor" isn't necessary./

 

[Se7en]

It's surprising how few Astron power supplies have bleeders installed at the factory. I put them in my RS-35s even before I actually put them to use, and I've been satisfied with the result.

so, you stuck a resistor in parallel inside your supply. is there a good to having this benefits inside?

excuse the many questions.

 

[Captain Kilowatt]

so, you stuck a resistor in parallel inside your supply. is there a good to having this benefits inside?

excuse the many questions.

Well for one you don't have to ask on a forum how to discharge them if you need to work on the power supply.

Sorry. Couldn't resist it. If your setup is anything like mine it would be handy. My power supply feeds a distribution buss and when changing wires around it is nice to not draw any sparks if wires should touch accidentally even if the PSU is turned off. Also when unplugging the 4 gauge main buss wires I don't have to worry about them shorting out on the metal desktop or by touching a grounded piece of gear. My Tripplet PSU has a lighted AC switch as well as an LED on the output which serves as both an indicator that voltage is available at the output as well as a form of bleeder. It takes about 30 seconds to completely discharge the 25 volt 100,000 uF filter cap.

 

[Beetle]

so, you stuck a resistor in parallel inside your supply. is there a good to having this benefits inside?

excuse the many questions.

What the Captain said. I used a 1500 ohm, 5 watt resistor - and the 5 watts was because it was what I had on hand. At 14 volts applied, that's just a bit over 9 milliamperes. This in turn corresponds to 131 milliwatts, meaning a half-watt resistor would do just fine.

I could drop the resistor value down to 500 ohms. This would result in a current of 28 milliamperes and a power of 392 milliwatts, and a faster discharge time. So far, however, the 1500 ohm unit is doing what I want.