I’m currently building an f6 and am making use of an lm 329(6.9 v) as a voltage reference. I’m curious what size resistor to use at R7 & R8? Is 3k3 adequate?
I’m using an Antek 400 va with 18 volt secondary. What is the formula for determining ideal resistor value? I’ve got some 3k3 metal film 1/4 watt on hand but can order perhaps 3.9k? Not sure though
Thanks
I’m using an Antek 400 va with 18 volt secondary. What is the formula for determining ideal resistor value? I’ve got some 3k3 metal film 1/4 watt on hand but can order perhaps 3.9k? Not sure though
Thanks
3.3K is fine as is 3.9K to be honest. LM329 is an excellent voltage reference, it's what I have in my prototype F6 build. Make sure you read the info sheet on the LM329 so you know which pins connect where for proper orientation of the diode as it relates to the PCB you have.
Post 27-30 goes through the details on how the calculation is done, courtesy of ZenMod and others:
F6 Illustrated Build Guide
For the future, I would recommend posting in that thread so we can keep all these questions in the same thread; easier for others to search, etc...
Thanks!
Best,
Anand.
Post 27-30 goes through the details on how the calculation is done, courtesy of ZenMod and others:
F6 Illustrated Build Guide
For the future, I would recommend posting in that thread so we can keep all these questions in the same thread; easier for others to search, etc...
Thanks!
Best,
Anand.