F
felix
HI
One of my first electronic projects back in 1959 was a relaxation
oscillator, using a large neon bulb with and Edison type base. The bulb
just flashes off and on. I have tried to draw the circuit using keyboard
characters.
I would like to make one again, just to keep on my desk for nostalgia's
sake. But here is the problem. I cant recall the values, and since I no
longer have parts box around, I will have to buy the two components, and
don't even know where to start with values. I vaguely recall that the
capacitor was about .1 microfarad, and the resistor was several megohms.
I still have several adequately rated diodes I can use for rectification,
but I hope someone can give me some approximate values for the resistor and
cap., thereby saving me guessing and many trips to the parts supplier. If
the circuit doesn't make sense, the capacitor and bulb are in parallel, and
the diode and resistor are in series , connected to the top of the cap. and
neon bulb . (I may not even have the circuit right - any help would be
appreciated.)
------------[diode]---[resistor]---I--------
I I
I I
AC line I I
[capacitor] [neon bulb]
I I
I I
-----------------------------------I--------I
Thanks in advance for your time
Felix
One of my first electronic projects back in 1959 was a relaxation
oscillator, using a large neon bulb with and Edison type base. The bulb
just flashes off and on. I have tried to draw the circuit using keyboard
characters.
I would like to make one again, just to keep on my desk for nostalgia's
sake. But here is the problem. I cant recall the values, and since I no
longer have parts box around, I will have to buy the two components, and
don't even know where to start with values. I vaguely recall that the
capacitor was about .1 microfarad, and the resistor was several megohms.
I still have several adequately rated diodes I can use for rectification,
but I hope someone can give me some approximate values for the resistor and
cap., thereby saving me guessing and many trips to the parts supplier. If
the circuit doesn't make sense, the capacitor and bulb are in parallel, and
the diode and resistor are in series , connected to the top of the cap. and
neon bulb . (I may not even have the circuit right - any help would be
appreciated.)
------------[diode]---[resistor]---I--------
I I
I I
AC line I I
[capacitor] [neon bulb]
I I
I I
-----------------------------------I--------I
Thanks in advance for your time
Felix