¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: IN8-2, cathodes stealing current from decimal point, what to do ?


David Forbes
 

On 8/27/10 11:00 AM, threeneurons wrote:
"threeneurons"<threeneurons@...> wrote:

"per.zapro"<per.zapro@> wrote:

I have designed a PCB around Hans' Nixie multimeter design :

... The CA3162 already outputs its data in a multiplexed format,
Here's a drawing of my last rant:


That's a pretty simple circuit to get the job done.

One question - what sets the 280 uA current in the MPSA42 collector to MPSA92 base connections? Shouldn't there be a big resistor there? The MPSA42 will be saturated and the MPSA92 base is one diode drop below 180V.



--
David Forbes, Tucson AZ

Join [email protected] to automatically receive all group messages.