On Wed, 19 Mar 2014 02:03:58 -0500, John Fields
wrote:

On Tue, 18 Mar 2014 10:44:25 -0700, John Larkin
wrote:


If you build the classic neon RC oscillator, it runs very slowly in LT
Spice. If you keep hitting escape, it sort of nudges it along.

---
Perhaps your 'classic' oscillator is different from mine, which
seems to work just fine:

Version 4
SHEET 1 880 680
WIRE -272 208 -320 208
WIRE -160 208 -192 208
WIRE -48 208 -160 208
WIRE 48 208 -48 208
WIRE -48 224 -48 208
WIRE -320 240 -320 208
WIRE -160 240 -160 208
WIRE -320 336 -320 320
WIRE -160 336 -160 304
WIRE -160 336 -320 336
WIRE -48 336 -48 320
WIRE -48 336 -160 336
WIRE -320 384 -320 336
FLAG -320 384 0
FLAG 48 208 OUT
SYMBOL Misc\\neonbulb -48 272 R0
WINDOW 0 40 1 Left 2
SYMATTR InstName NE1
SYMATTR Value2 Vstrike=80 Vhold=60
SYMBOL cap -176 240 R0
SYMATTR InstName C1
SYMATTR Value .1µ
SYMBOL voltage -320 224 R0
WINDOW 123 0 0 Left 2
WINDOW 0 44 56 Left 2
WINDOW 3 31 87 Left 2
SYMATTR SpiceLine Rser=0
SYMATTR InstName V1
SYMATTR Value 150
SYMBOL res -176 192 R90
WINDOW 0 -33 58 VBottom 2
WINDOW 3 -32 58 VTop 2
SYMATTR InstName R1
SYMATTR Value 10meg
TEXT -272 360 Left 2 !.tran 0 10s 0 0.01s uic
TEXT -272 392 Left 2 ;NEON RELAXATION OSCILLATOR
TEXT -272 424 Left 2 ;JOHN FIELDS, 19 MARCH 2014


Hey, plug in Jim's TANH version and see how well that oscillates.


--

John Larkin Highland Technology, Inc

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com