Nixie bargraph as a audio VU-meter

[wim]

I bought some nixie bargraph's (IN-9 and IN-13) an i intend to use them as audio VU-meters for my amp, but i seems to be a hard job to "google" a schematic to drive them.

Is here anyone who can help me getting a schematic or so?

Thanks anyway.

 

[jackinnj]

National Semi has a series of bargraph drivers which can be configured as nixie drivers -- search on LM3915, LM3916 etc.

 

[Nixie]

Interesting, I didn't realize there were such types of Nixies. I still thin the Magic Eye tubes look better for this use, however.

 

[coresta]

Hi DIYers ! Did anybody ever build a dB scaled bargraph with nixie IN13 ? These have a cool oldlooking orange area but work in a linear way . Any idea for a tubed circuitry for a log amp ? 😕 Cheers 😉

 

[astouffer]

Google for "in13 nixie" and the first hit is this:

http://www.ledsales.com.au/cart.php?target=product&product_id=157

 

[nickds1]

I bought some nixie bargraph's (IN-9 and IN-13) an i intend to use them as audio VU-meters for my amp, but i seems to be a hard job to "google" a schematic to drive them.

Is here anyone who can help me getting a schematic or so?

As usual, the neonixie-l group on Yahoo!!!! is your friend. (I note that several of us lurk here, including the incredible Alek and his home-made tubes - he's still the only person we know to have made a home-made nixie.).

See the files section:
Files > Other readout technologies > Neon Bargraph Indicators

For drivers, see:

VU driver for IN-13 & IN-9

Various driving strategies for IN-9 & IN-13

A simple kit to play with...

HTH

 

[bays_9a5tt]

Re: Re: Nixie bargraph as a audio VU-meter

(I note that several of us lurk here, including the incredible Alek and his home-made tubes - he's still the only person we know to have made a home-made nixie.).

Hi Nick, another Neonixie member and DIYaudio lurker 🙂

 

[djQUAN]

I think it would be interesting to build an RTA with 31 of these.

 

[payitforwardeddie]

Neon Bargraph Indicators

For drivers, see:

Various driving strategies for IN-9 & IN-13

HTH

Has anyone here built a very simple circuit with, say, an ECC81 / 12AT7 driving the above. What I'm thinking of is two bargraph circuits to monitor the cathode current of the OP valves. (current mirror ?)

 

[DigitalJunkie]

I think it would be interesting to build an RTA with 31 of these.

https://www.youtube.com/watch?v=x0NJhbx9IYM
https://www.youtube.com/watch?v=qLzXueWH8qo

🙂

 

[hidnplayr]

I once built one with cheap parts I had laying around.
The IN9/13 tube here is represented by a 2k resistor.

Only problem i remember was the lin/log conversion (the opamp with two transistors) wasnt very stable. You need to glue the two transistors together for temp correction.

If I had to remake it, i'd simply use an old radio tube: EBF80
If you are using balanced signals in all your amps, like me, it's a piece of cake to design a circuit to use this tube to drive an IN9/13

 

[RS232]

I think you are looking for something like this:
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes

Ric