[neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

Also, having the schematic, you can test for leakages without need of climbing to the roof :) -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

[neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

The LEDs could light very dimly due to, as you say, leakage on the "sender", but it also could do so due to mechanical vibration of the system in the roof, spinning of the wind arrow or to leakage in the cable. If it is not too disturbing, just don't run the risk. Remember too that the circuit

[neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

So, installed the LEDS and all is well almost. One of the reed switches in the outdoor sending unit (you know, the one up on the roof!) is bad, plus there

RE: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

V. Thanks for pointing that out. Bill -Original Message- From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of David Forbes Sent: Thursday, March 24, 2016 1:54 PM To: neonixie-l@googlegroups.com Subject: Re: [neonixie-l] Re: Off topic, but it has an oran

Re: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

In the spirit of nixies, though, you could redo the entire design and use NE-2 bulbs. I've driven NE-2's with opto-triacs on a few projects, which allows you to safely (ie, with proper isolation) control AC-line voltages from digital logic. The MOC3021 has 5kV isolation and costs about 50

Re: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

- From: "David Forbes" <dfor...@dakotacom.net> To: <neonixie-l@googlegroups.com> Sent: Friday, March 25, 2016 4:24 AM Subject: Re: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer Bill, Thanks for the long rant, but typical LEDs have an ab

Re: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

Bill, Thanks for the long rant, but typical LEDs have an absolute maximum reverse voltage rating of 5V. Exceeding this is not guaranteed to destroy the LED, but The LED is not guaranteed to work properly after such use. It is irresponsible to recommend that people ignore the datasheet

RE: [neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

nce I still see this incorrect proposition about reversed LEDs too often. Bill From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of gregebert Sent: Thursday, March 24, 2016 10:34 AM To: neonixie-l Subject: [neonixie-l] Re: Off topic, but it has an orange display..

[neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

Modern LEDs may be "better", but back in the old days, LEDs were no characterized for reverse operation and were pretty poor rectifiers (I forget whether it was leakage or low and unpredictable breakdown voltage, or both). I would keep the series Si diodes. There was a lot of discussion

[neonixie-l] Re: Off topic, but it has an orange display.. Heathkit ID-1590 anemometer

As long as you dont exceed the RMS current rating of the LED, they will outlast any other type of illuminating device being replaced, especially incandescent. >From the schematic, there are already diodes in the path, so if an LED was installed backwards there's no possible way it can get