r 9 resistor

a DIY, modified Mullard 5-20 monoblock design

r 9 resistor

Postby audioray » Tue Aug 24, 2004 9:40 pm

r-9 res. is on back order at mouser. the value is 2 watt/30k.
can i sub. a 5watt /30k. it is larger but it can be made to fit.
audioray
 
Posts: 57
Joined: Wed Mar 19, 2003 4:04 pm
Location: Boston MA.

Postby erichayes » Tue Aug 24, 2004 11:35 pm

Hi All,

Definitely. You can always substitute a resistor with higher dissipation for one of lower dissipation, as long as you can shoehorn it into the physical space involved. Now, if you want to start talking about the sonic characteristics of carbon composition, carbon film, metal film, metal oxide and wirewound resistors, that's another subject--one I don't care to get involved with.

In general, capacitors with higher voltage ratings and resistors with higher dissipation ratings than those specified for a circuit are acceptable as long as they fit physically. The only exception I can think of is NOS electrolytic caps, which tend not to "form", or exhibit their rated capacitance, if operated at voltages substantially below their rating. New electrolytics don't have this problem, but you should use caps close to the voltage specified in the circuit parts list for both price and size considerations.
Eric in the Jefferson State
erichayes
KT88
 
Posts: 987
Joined: Fri Jan 23, 2004 9:01 pm
Location: McKinleyville CA

Re: r 9 resistor

Postby Shannon Parks » Wed Aug 25, 2004 6:11 am

audioray wrote:r-9 res. is on back order at mouser. the value is 2 watt/30k.
can i sub. a 5watt /30k. it is larger but it can be made to fit.


Go with the one step up: 283-30K

It will fit much easier than a 5W resistor. The original circuits actually used 1W resistors.

Shannon
User avatar
Shannon Parks
Site Admin
 
Posts: 3764
Joined: Tue Mar 18, 2003 5:40 pm
Location: Poulsbo, Washington


Return to eiclone

Who is online

Users browsing this forum: No registered users and 5 guests