***Official Electronics Thread of Officialness (it starts off with lots of Nixie Tube Clock goodness

  • Thread starter Thread starter Aod
  • Start date Start date
pyropetepete said:
Sorry i forgot your a HAM! it's of no use to everyone else then?
Click to expand...
Probably not, not unless you live next to a radio ham (note, not capitalised :)) and get problems with your ADSL when he transmits.

Burnsy2023 said:
How accurate have you managed to get these? What's your tolerance on 3.2uH?
Click to expand...
I've followed the instructions in the attached document, nothing more I can say really, I don't have the equipment to measure the actual inductance so I'm going on his notes.
 
You could stick one in a Colpitts oscillator with known capacitance values and use the measured frequency of output to calculate the actual inductance value. It's probably well within useable tolerance anyhow though.
 
Feek said:
Nobody makes one. It's custom designed to insert huge levels of attenuation above 2.2MHz so that I can stop my ADSL dropping in speed and sometimes cutting out when I transmit on 3.5MHz and 7MHz.

Here's the circuit.

adsl-filter.png
Click to expand...

are you goin g to make a load for your poor neighbours too? :p
 
They don't have broadband??? The savages! :eek:


I meant more that 99.99% of people wouldn't have a clue that it was caused by you and would just think their internet connection was poor, if you didn't tell them there might be issues.
 
I'll do a proper build log at some point, but I've finished building the Nixie driver kit and I've been fabricating a piece of PVC drain pipe into a mount for the tubes. Seems to be going well, but loads of work still to do.
 
Nixie clock experts please help!

I'm building the IN16 kit & have a problem. Low voltage testing went fine, however when I was testing high voltage I didn't get 150v-190v as per the guide, I got 138v. By adjusting the brass screw on component VR1 I've managed to raise the voltage to 1.58v but am unable to raise it further. The guide tells me to set the voltage between 170v - 175v.

Please advise what I've done wrong, my solder joints all look nice & solid & though I cannot guarantee I've not put the wrong resistor somewhere I did double check everything as I went along.

Will the clock run on 158v ?

Please advise

Many thanks
 
bainbridge said:
Nixie clock experts please help!

I'm building the IN16 kit & have a problem. Low voltage testing went fine, however when I was testing high voltage I didn't get 150v-190v as per the guide, I got 138v. By adjusting the brass screw on component VR1 I've managed to raise the voltage to 1.58v but am unable to raise it further. The guide tells me to set the voltage between 170v - 175v.

Please advise what I've done wrong, my solder joints all look nice & solid & though I cannot guarantee I've not put the wrong resistor somewhere I did double check everything as I went along.

Will the clock run on 158v ?

Please advise

Many thanks
Click to expand...

The screw has a lot of movement on it have you gone all the way through?
 
bainbridge said:
Thanks for replying Burnsy, yes I've kept turning it & raising the voltage til I reached the point where the voltage stops increasing & there is a tiny clicking coming from the screw, like it has reached the end of its travel. Any ideas?
Click to expand...

Checking Resistor values would be my next line of inquiry. Did you follow the instructions on how to build the high voltage section?
 
You must log in or register to reply here.
Back
Top Bottom