An interesting circuit the gates need an inversion to work so it is necessary to use 1, 3, 5... always an odd number.
I have it blinking with a 88k ohm resistor and 10 uF cap.And i have a lot of dust here, but I don't think it is magic
No just the right chip, your choice of the HC14 was the error, easily fixed, either use 3 gates of a 74HC14 or 1 gate from a CD40106 or a CD4584. You can also use a CD4093 if you tie the inputs together or use one input to gate the oscillator, which is a better option than my suggestion above because there is no startup delay as there is with the diode gate, I've used both many times on many different configurations. Once I set one up driving the gate of a BIG mosfet which switched 12 v to an ignitiion coil and a spark gap that was coupled to a 75 cm ring of 10 Ga copper wire and a 100 PF cap @ 10 KV... Made a great noise source to do a rough noise immunity test. When I initially tested it... It destroyed 3 calculators I had on my bench... About 100 watts of power @ ~ 50 MHz... in 2 hours... From scratch.. @50 MHz. Note: The device was an AM transmitter making power @ 50 MHz modulated by the 2KHz signal from the Cmos gates...Bob
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