Question about Boss AUDIO CAP2C 2 FARAD CAPACITOR DIGITAL VOLTAGE

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Boss 3.5s capacitor?

What size resistor do I need to first charge my Capacitor?

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Something in the order of 120 ohms. If you use a 1/4 watt size it will get extremely hot.

Posted on May 18, 2009

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Posted on Jan 02, 2017

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I need the value of or the resistor around the start capacitor of a Magnatek 6.5 hp compressor motor 220v single phase


The resister soldered between the two leads of the capacitor is not really needed for operation. This resistor just bleeds down the charge of the capacitor when the compressor is off. Could you re-post with the problem that you are having with the unit.

Feb 27, 2015 | Air Tools & Compressors

1 Answer

R1400D SCHEMATICS


This is actually not so difficult from a logics perspective.
(Also it is true about their lack of schematics)
There are usually many more than one capacitor in these units. Good thing is all the capacitors are usually from the same manufacturer. Therefore is you match the size you can usually be pretty sure of the value of the blown one as they are usually a range of sizes for each value.
Hope this helps.

Jul 13, 2017 | Boss R1400D Car Audio Amplifier

1 Answer

Need a replacement capacitor for German Polar Paper Cutter. 630vac / .25uF. BOSCH MP 0 670 104 013, HPF 0560-14.


Given how long ago you asked this question, my answer is probably no longer relevant. I just recently had the same problem on a Polar Mohr 92-ECM; out of spec cap and burned open resistor. Though I don't think there's much of a chance of finding the original Bosch part, the fix was easy. Allied Electronics has a suitable replacement by Illinois Capacitor: http://www.alliedelec.com/illinois-capacitor-inc-224ppa202k/70112118/
Note that this is a 0.22uf, 2,000 VDC (630VAC) cap. It will work fine.
For the resistor: http://www.alliedelec.com/te-connectivity-rox2sj47r/70063648/
This is a metal oxide film resistor, rated 2-watt and will not cause as much board damage if it fails - which is unlikely.

If you really want to match the original value of 0.25uf, you may add three or four 0.01uf caps in parallel, making an "array". The 0.01uf caps have a 3,000VDC rating, which is perfectly fine. They are available at Newark Electronics: http://www.newark.com/illinois-capacitor/103ppa302k/capacitor-polypropylene-pp-film/dp/30K6560

The capacitors are polypropylene film rather than electrolytic, but they are snubber caps, rated for the purpose and will work just fine (and will probably last longer as well).

I hope this helps.

Dec 16, 2012 | Office Equipment & Supplies

2 Answers

For some reason my capacitor wont charge, I've checked everything! I just bought a boss cap3.5b and I know for sure the fuse is working there is power coming from the battery and the cap is grounded...


get a small led or something that runs on 12 volts. i use my 5 dollar 12v test light and hold it to the positive cable thats gonna be hooked to my cap.
hook the other side to the cap, it will light up the test light and in a minute or two the light dims and then goes out, after its out , the cap is charged......JUST DONT LET IT TOUCH THE OPPOSITE WIRE WHEN YOU HOOK IT UP OR YOU DISCHARGE IT and its not funny

Jul 31, 2010 | BOSS AUDIO CAP3-5B 3.5 FARAD CAPACITOR,...

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How to charge the lanzar 1.6 capacitor


typically you can charge or discharge large capacitors using a resistor. Not just any resistor will do. You will need one with high-enough resistance and wattage ratings or you'll burn up the resistor. I would use a 1/2W, 4.7kohm or a 1W, 1kohm. These are minimum values and you can use a slightly higher resistance but it will take longer to charge/discharge.

To charge, connect the positive terminal, then hold the resistor between the ground wire and the ground terminal for 30-60 seconds. Then connect the ground terminal. To discharge, disconnect both terminals, then hold the resistor across the terminals (do not reconnect terminals without charging). In either case, you can use your fingers to hold the resistor as DC will not shock you, but if the resistor gets hot it will burn you. I use needle-nose pliers to hold the resistor (just in case). Just be careful not to short the resistor leads or terminals with the pliers.

Explanation: For a standard cap 1 - 2 farads, the discharge voltage is up to 20V so we'll figure off of that. I would use at least a 1/2 watt resistor, a 1 watt could be safer, depending on the value. For a 1 watt, the current can be no more than .05A at 20V. For a 1/2 watt, only .025A. Let's say .04A and .02A, respectively. Ohms = Volts / Amps, so 20V / .04A gives us 500ohms. Double that to be safe (avoid overheating) and it's 1kohm. Same process for the 1/2W version will be 2kohm, but it's not as hefty, so I would recommend 4.7kohm.

Jun 29, 2010 | Lanzar 16 Farad Power Capacitor LQ16CAP

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How to install a zx-hypercap in to my car


Hello youngbossrio,

Like other car audio capacitors, the Volfenhag zx-hypercap has two terminals, a positive and a negative. The negative terminal is connected to the metallic frame of the vehicle (ground). The positive terminal is connected "in-line" with the amp 12V positive terminal.

The capacitor should be as close as possible to the amp. Within a couple of feet is acceptable.

The capacitor needs to be "charged" before connecting it directly to 12V positive. This is done with a 1000 ohm resistor and a voltmeter. The exact value of the resistor is not critical but it should be in the 500-1000 ohm range. Use at least a 1 watt resistor (your capacitor may have come with a resistor for charging).

Hope this helps.

Aug 26, 2009 | Volfenhag ZX-8300 Car Audio Amplifier

1 Answer

35 Farad hybrid power capacitor not charging like instructed in manual, tryed charging the cap throgh the supplyed resistor "2watt/10ohm" between power cable and cap.But nothing happens seems like it dosnt...


Yes you certainly wire the 12v+ wire directly to the positive post of the stiffening Capacitor, however if you have a one of those test light probes to check for current on a car? They are really cheap but what i do is clamp the one end on to the battery and than touch the probe to the + teriminal of your capacitor, when the light goes out your cap is fully charged. Now if the light does not go all the way out or stays on you have a bad capacitor, and might i ask why the hell are you driving to need a 35 Farad Capacitor anyway?? Damn.. We do show and competition cars here and sometimes use them. I like the BatCap way better, it's a Battery and a Capacitor all in one. Way strong like bull..... good luck... Mark

Aug 14, 2009 | Boss Audio CAP10 10 Farad Digital...

1 Answer

How to install a 7 band boss eq with no high input jacks


If you are using the low input to put high input in you can use a 22k resistor and a 10uf capacitor connected in series to the plus side of the speaker wires. This will bring down the signal level from the speaker to low input level and you will have a nice distorted free music.

Aug 11, 2009 | Boss Car Audio & Video

1 Answer

How do i charge a capacitor for sound system?


Hello gradycusick,

I'm assuming that your cap did not come with a "charging resistor" and instructions, or you bought it from someone used.

The recommended way to charge a capacitor is through a 500-1K ohm resistor, at least 5 watts. Connect a DC voltmeter to the cap leads, connect the positive side through the resistor and to battery positive, and connect the negative side to battery negative (or grounded to the vehicle frame). Do not hold the resistor. It will get HOT. When the voltmeter reads 12V, the capacitor is charged.

If you do not have the resistor or a voltmemter, you can simply use a 12V automotive bulb. Just connect the bulb in series with the battery positive and the capacitor and connect the negative side of the cap to battery negative. When the light goes out, the cap is charged.

You can see an example of both methods here.

Hope this helps.

May 04, 2009 | Car Audio & Video

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