[GreenKeys] ST-6 neon lamp part number

[Bruce Gentry]

A suggestion was made to replace the neon lamps wih LEDs. In many 
demodulator circuits, the bulbs are not just indicators, they are used 
as switches that require a threshold voltage to turn on.  Using a zener 
in series with an led might not work either,  the firing threshold 
voltage is higher than the sustaining voltage. Also, a neon lamp is 
bidirectional.  I try to  replace incandescent lamps with LEDs anywhere 
I can, but some circuits are designed around a particular lamp and 
substitutes will not work.

        Bruce Gentry, KA2IVY

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20200526/120ef07a/attachment.html>