How to solve noise/storing/on car Tube Amp ? any Schematic ?

calico88 · 13th January 2007, 01:22 AM

I just finish my car tube amplifier and I need a "Filter" circuite diagram because of the alternator/engine noise that goes in to the amp (noise).

does anyone ever built this filter ? specially for tube car amp ?

any schematic/info/website ?

cal

nhuwar · 13th January 2007, 02:52 AM

What kind of cap's do you have on it. You can also use the math and figuare the ripple coming off the alternator.

I just don't remimber the frquency they work at.

But if the amp isn't huge you can use a pi filter to do it or just 2 1 farad caps and a swinging cap.

( swinging cap is a high power pulse amp trick it's a high capacitance cap in seires with a 'lets say a 5 ohm resister of high wattage be for the other filter caps. )
The idea is that the resistor keep's the swing cap from completely discharging and quickly charges the other ones up so you see less of a drain from the other cap when they charge.

lndm · 13th January 2007, 03:37 AM

Don't forget to bypass the electrolytic in order to catch the harmonics.

calico88 · 13th January 2007, 05:02 AM

thanks guys,
but I need the schematic for that and how to make the coil... if there is one.

cal

13th January 2007, 01:22 AM	#1
calico88 diyAudio Member Join Date: Mar 2006 Location: sdf	How to solve noise/storing/on car Tube Amp ? any Schematic ? I just finish my car tube amplifier and I need a "Filter" circuite diagram because of the alternator/engine noise that goes in to the amp (noise). does anyone ever built this filter ? specially for tube car amp ? any schematic/info/website ? cal __________________ be tube

13th January 2007, 05:02 AM	#4
calico88 diyAudio Member Join Date: Mar 2006 Location: sdf	thanks guys, but I need the schematic for that and how to make the coil... if there is one. cal __________________ be tube

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13th January 2007, 02:52 AM	#2
nhuwar diyAudio Member Join Date: Jan 2007 Location: Tomball Texas	What kind of cap's do you have on it. You can also use the math and figuare the ripple coming off the alternator. I just don't remimber the frquency they work at. But if the amp isn't huge you can use a pi filter to do it or just 2 1 farad caps and a swinging cap. ( swinging cap is a high power pulse amp trick it's a high capacitance cap in seires with a 'lets say a 5 ohm resister of high wattage be for the other filter caps. ) The idea is that the resistor keep's the swing cap from completely discharging and quickly charges the other ones up so you see less of a drain from the other cap when they charge.

13th January 2007, 03:37 AM	#3
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	Don't forget to bypass the electrolytic in order to catch the harmonics.

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