Posts: 3
Threads: 1
Joined: Apr 2019
City: Lake Forest
State, Province, Country: Illinois
I'm replacing the filter capacitor in a Philco 49-607 by using discrete electrolytic capacitors of proper rating. Anybody have suggestions from your experience? I think I should tie wrap so they won't bounce around but I need ideas. Thanks, Ed
Posts: 15,691
Threads: 551
Joined: Oct 2011
City: Jackson, NJ
Ed,
this is a portable so I am not sure what space you got there; if possible we try using film caps instead of electrolytics.
Also, when choosing the first filter cap, if it is electrolytic (the one right after the rectifier - there may be a resistor in between, around 80-90 Ohms) make sure it is about double in its ripple current rating vs the current consumption.
I have a similar setup in my Zenith 7G605 and the current out of the rectiifier is about 75mA (could be a bit less in your case) so I chose the one with the Iripple about 150mA.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 3
Threads: 1
Joined: Apr 2019
City: Lake Forest
State, Province, Country: Illinois
Morzh,
Thanks for the information and suggestions. I'm only using electrolytic caps to replace the filter capacitors, 60-30-30-10 as I recall. The rest are film caps so not too crowded in the chassis. I'll check the resistor after rectifier/filter caps as you suggest. Good idea. Thanks.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
Posts: 816
Threads: 25
Joined: Mar 2014
City: Louisville, KY
Excellent work!
Posts: 289
Threads: 42
Joined: Jan 2014
City: Jeffersonville
State, Province, Country: PA
I re-stuffed the filter can on mine. Was pretty straight forward as long as the original can is intact. I've come across a few that were disintegrating and unusable.
Good luck!
Paul
Posts: 3
Threads: 1
Joined: Apr 2019
City: Lake Forest
State, Province, Country: Illinois
That looks great! I may give it a try.
Thanks, Ed