CLC vs LCLC: is there any advantages other... - diyAudio
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Old 17th June 2006, 12:09 PM   #1
jarthel is offline jarthel  Australia
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Default CLC vs LCLC: is there any advantages other...

having a lower voltage across the 1st cap on LCLC and other differences as mentioned in the rectifier datasheet?

here's what i'm thinking

lclc:
xformer -> 5V4G/5U4GB -> 10H 200mA 87ohm-> 10uF -> 10H 200mA -87ohm > 100uF

clc:
xformer -> 5V4G/5U4GB -> 10uF -> 10H 200mA 87ohm -> 100uF


the B+ after the 100uF will be regulated using a design found in the RCA designer's handbook (chap 33 fig 33.14).

thank you for the help
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Old 17th June 2006, 02:15 PM   #2
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When a choke I/P filter (LCLC) is used, additional regulation circuitry is usually not needed. The O/P voltage of a choke I/P filter is quite stable, even as the draw varies.

Have you studied the theory of choke I/P filters? If not, READ. Don't forget to ensure that the critical current gets drawn. In the case of a 10 H. 1st inductor, place a high wattage rated 10 KOhm bleeder resistor across the 1st filter cap.
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Old 17th June 2006, 02:19 PM   #3
jarthel is offline jarthel  Australia
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Quote:
Originally posted by Eli Duttman
When a choke I/P filter (LCLC) is used, additional regulation circuitry is usually not needed. The O/P voltage of a choke I/P filter is quite stable, even as the draw varies.

Have you studied the theory of choke I/P filters? If not, READ. Don't forget to ensure that the critical current gets drawn. In the case of a 10 H. 1st inductor, place a high wattage rated 10 KOhm bleeder resistor across the 1st filter cap.

can you suggest what article to read?

also, someone from AA suggested a 220K-330K on the last cap. is he wrong? maybe it's applicable to clc only?

thanks for the reply.
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Old 17th June 2006, 02:37 PM   #4
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NEETS (US Navy) stuff here.

NEETS has all sorts of basic electronics info.
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Old 17th June 2006, 03:10 PM   #5
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Check Duncap Amps Power Supply Designer II.

Very helpful !

Cheers,
J.P.
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