3 posters
Received my Solid State VTA Rectifier kit today
Rbertalotto- Posts : 98
Join date : 2021-02-25
Tom Pickett likes this post
alanhuth- Posts : 40
Join date : 2020-07-06
Location : Chicago
Did this rectifier work out for you?
I notice the Weber has 2 18-ohm, 10 watt resistors in series in theirs. this has no resistor at all. I’d like someone to explain whether they are needed here or not?
Thanks
I notice the Weber has 2 18-ohm, 10 watt resistors in series in theirs. this has no resistor at all. I’d like someone to explain whether they are needed here or not?
Thanks
Rbertalotto- Posts : 98
Join date : 2021-02-25
- Post n°3
Re: Received my Solid State VTA Rectifier kit today
by Rbertalotto Thu Jun 10, 2021 8:28 pm
So far so good. Working great!
alanhuth- Posts : 40
Join date : 2020-07-06
Location : Chicago
Any idea why it doesn't need the resistors the Weber has?
Rec- Posts : 77
Join date : 2020-03-11
Weber sells multiple models. I have been using (and have repaired) a couple of WZ68 and a WS1. The WS68 has the 2x18 ohm resistor and the inrush resistor. The WS1 has no resistors and the inrush delay is optional (eg its just a bunch of diodes). The Webers use 2 series diodes per leg for some reason.
The resistor mimics the voltage drop of a tube rectifier to get your B+ more in 'tube range'. WS1 will have a higher B+. So this "kit" is more like the WS1. You accommodate these differences with bias setting on your amp.
The resistor mimics the voltage drop of a tube rectifier to get your B+ more in 'tube range'. WS1 will have a higher B+. So this "kit" is more like the WS1. You accommodate these differences with bias setting on your amp.
alanhuth- Posts : 40
Join date : 2020-07-06
Location : Chicago
The kit also has a thermistor. Doesn't that affect inrush current?
Rec- Posts : 77
Join date : 2020-03-11
Yes. High resistance at starting (to limit current), lowers as it heats up and conducts. There was one in my WS1 (which I ordered with delay) and also the WZ68. The kit will have a short startup delay.