Caps with higher uf values okay?

texasmame

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Want to cap the 19V2000 in the Battlezone I'll be keeping. I have a kit for a G05 kicking around right now. Here are the cap listings (transistors are the same):

http://www.ionpool.net/arcade/capkits/WG_19V2000_Bob.txt

C500 1u 50V
C501 1u 50V
C502 1u 50V
C503 1u 50V
C504 22u 250V
C603 2.2u 50V
C703 2.2u 50V
C900 1000u 50V
C901 1000u 50V
C904 47u 50V
C908 4.7u 160V


http://www.ionpool.net/arcade/capkits/Elect_G05_Bob.txt

C500 2.2u 50V
C501 2.2u 50V
C502 2.2u 50V
C503 2.2u 50V
C504 47u 200V
C900 1000u 50V
C901 1000u 50V
C904 47u 50V
C908 4.7u 250V

I know you can use the higher voltage caps with no problem but how about the higher u values? For example, can the 2.2u@50V be used in place of the 1u@50V safely?


TIA!
 
Generally, no. There are some circumstances where the value isn't critical, but that would require specific knowledge about the circuit in question.
 
That said, capacitors in parallel follow this equation;

1/Ct = 1/C1 + 1/C2 <or> Ct= 1/ (1/C1 + 1/C2)

So if C1 and C2 = 2.2uf, installing them in parallel is equal to a 1.1uf which is +/- 10%. If you had two of each, that would work for your C500-C700 caps although it would look like hell...
 
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That said, capacitors in parallel follow this equation;

1/Ct = 1/C1 + 1/C2 <or> Ct= 1/ (1/C1 + 1/C2)

Careful... that's backwards! Capacitors in PARALLEL follow this equation:

Ctotal = C1 + C2 + ... + Cn


Capacitors in SERIES follow this equation:

1/Ctotal = 1/C1 + 1/C2 + ... + 1/Cn


It's just the opposite for resistors.
 
Careful... that's backwards! Capacitors in PARALLEL follow this equation:

Ctotal = C1 + C2 + ... + Cn


Capacitors in SERIES follow this equation:

1/Ctotal = 1/C1 + 1/C2 + ... + 1/Cn


It's just the opposite for resistors.

Now you've confused me. :(
 
if i have to change the uf of a capacitor, stay within 10%

if it's a high value like a 40,000 or a 15,000 or something, i dont worry about it much
 
Careful... that's backwards! Capacitors in PARALLEL follow this equation:

Ctotal = C1 + C2 + ... + Cn


Capacitors in SERIES follow this equation:

1/Ctotal = 1/C1 + 1/C2 + ... + 1/Cn


It's just the opposite for resistors.

Hypersport is correct. I was thinking one and writing the other.

Now you've confused me. :(

Hyper was quoting the equation for more two or more. For just two capacitors in Series it simplifies to;

1/Ct = 1/C1 + 1/C2

<or>

Ct= 1/ (1/C1 + 1/C2)
 
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