Search found 3 matches

by Merlot
Wed Sep 04, 2019 4:34 am
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 144
Views: 350141

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

Hey Joe, thanks for the reply. I did not mean to use the 6.3vac to drive the buffer. I thougth about using the B+ with a dropping resistor. And as a last resort I could use DC heaters and then thought about using this for the buffer. Thats why I ask if the supply voltage has to be well filtered for ...
by Merlot
Mon Aug 26, 2019 2:34 am
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 144
Views: 350141

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

It will be this one but instead of the rectifier tube I will use diodes.
I plan on using AC heaters but when that's too noisy I'll go with CR filtered DC heater.
by Merlot
Wed Aug 21, 2019 10:33 pm
Forum: JLM Audio Kits
Topic: VU BUFFER & PEAK LED KIT BUILD THREAD
Replies: 144
Views: 350141

Re: VU BUFFER & PEAK LED KIT BUILD THREAD

Hey Joe, I plan on building a tube mic preamp and would like to add a vintage Telefunken VU meter. I wanted to ask, what the best way would be to power the buffer from the power rails I have. The power transformer has 250V 20mA, 6,3V 700mA and 6,3V 500mA. I wanted to test AC heaters plus de-hummer p...