I'm in the early stages of an amp layout, I'm trying to see If I can fit everything for a 4 channel 70-100 watt/channel class A/b amp in a package that will fit in my entertainment center. I wanted to go with class A, but even at 4*40 or 2*20+2*40 I won't have room for all the heatsink. (looking to bi-amp)
So right now I'm Looking for sources of capacitors suitible for power supplies. I'm looking at a supply voltage of around 90 volts. I want between 20,000 and 30,000 uf but would be willing and probably able to fit multiple caps of 5,000 or larger. Thanks for any help,
Wade
So right now I'm Looking for sources of capacitors suitible for power supplies. I'm looking at a supply voltage of around 90 volts. I want between 20,000 and 30,000 uf but would be willing and probably able to fit multiple caps of 5,000 or larger. Thanks for any help,
Wade
For a frame of reference I recently bought some Mallory computer grade electrolytics from Mouser, they are 75 VDC 37000 MFD and are about 145 mm tall and 75 mm in diameter. Pretty big! So I don't know, but these definitely take up a lot of space and the size and shape makes it pretty hard to fit them in a small chassis.
lots of smal caps a couple big ones
75 volts should be plenty and give me room to expand in the future. I found some 75v 3100 uF Mallroy caps at C&H (surplus sales) for $2.50(they have others too) seems I have just enough room for 6/rail. Or 5 of another kind, or 2 of a third all giving capacitance values between 18,000 and 19,000. Any advice on what is better a lot of smaller caps or a few large caps.
Wade
75 volts should be plenty and give me room to expand in the future. I found some 75v 3100 uF Mallroy caps at C&H (surplus sales) for $2.50(they have others too) seems I have just enough room for 6/rail. Or 5 of another kind, or 2 of a third all giving capacitance values between 18,000 and 19,000. Any advice on what is better a lot of smaller caps or a few large caps.
Wade
Not mpja
Sorry, mpja doesn't have caps, but they do have other electronics.
Try: http://www.apexjr.com
Sorry, mpja doesn't have caps, but they do have other electronics.
Try: http://www.apexjr.com
try philips
I use the philips high current ones. They proved to be very good. I don´t know about their price compared to other ones.
I use the philips high current ones. They proved to be very good. I don´t know about their price compared to other ones.
Have you considered cascoding the output devices?
This makes them somewhat immune to power_supply ripple
at all frequencies, and may let you reduce the amount of
capacitance on the high-current rails.
This makes them somewhat immune to power_supply ripple
at all frequencies, and may let you reduce the amount of
capacitance on the high-current rails.
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