Rectifier Question

[Tone_Boss]

Can a 5U4 be used in place of a GZ34 or 5Y3 ? Thanks

 

[Blue Strat]

Can a 5U4 be used in place of a GZ34 or 5Y3 ? Thanks

Sometimes. What amp?

http://www.kcanostubes.com/content/newsletter_details.asp?ArticleID=3

 

[Tone_Boss]

Most likely my Emory SuperBaby.

 

[go7]

In am Emery Superbaby you can run whatever tube you want in any position. power, pre amp or rectifier. That`s part of the amps appeal. Tube swapping for different sounds. I love mine. Good Luck!

 

[Roccaforte Amps]

Can a 5U4 be used in place of a GZ34 or 5Y3 ? Thanks

You need to know the amp circuit before you do this.
A 5U4 takes 3 amps of heater current where the GZ34 is 1.9.
Same for the 5Y3, it's 1.9 amp.
The power transformer 5V winding has to have to reserve current to support the 5U4 heater demand.
Also, sticking a 5U4 into a circuit designed for a 5Y3 will increase
the voltage to a much higher level. Could be a bad thing......

 

[Tone_Boss]

You need to know the amp circuit before you do this.
A 5U4 takes 3 amps of heater current where the GZ34 is 1.9.
Same for the 5Y3, it's 1.9 amp.
The power transformer 5V winding has to have to reserve current to support the 5U4 heater demand.
Also, sticking a 5U4 into a circuit designed for a 5Y3 will increase
the voltage to a much higher level. Could be a bad thing......

Thanks Doug, that pretty much answers the question then. Won't work without eventually melting something, 3 amps is way too much. Reason I asked is there are alot of these rectifiers floating around and they are cheap. Mullard GZ34's are getting rediculous now.