Real High Precision Timing Sources

jpanhalt

Joined Jan 18, 2008
11,088
I still have 90V and 135V Burgess batteries I used for the plate voltage in my "handheld" transmitter. Wonder if they are still good? I hope so, then I can avoid buying a NE555 for $0.06 each. ;)
 

KeithWalker

Joined Jul 10, 2017
2,406
I don't know why so many people promote use of 555 timer when they could have
this -

http://www.oddmix.com/tech/hv_neon_lamp_multivibrator.html



and this (memory cell) -

https://hackaday.com/2016/12/12/the-many-uses-of-the-neon-lamp/



Get rid of all those crazy ICs like micros and go back to the good old days is my motto.


Regards, Dana.
I used this concept to build a mystery box back in the early 60's It had nine neons (three rows of three) in miniature indicator lamp housings mounted on a 3" square panel glued on the front of a little box that contained the battery, capacitors and resistors. The neons blinked briefly at about once every five seconds, but they were all slightly different so they blinked randomly. I had it for about a month. My insurance broker was so intrigued with it that I gave it to him. I often wondered how long it continued to blink for.


Box.jpg
 
Top