So there is this one circuit that uses only 1 transistor to make a simple LED flasher. The schematic is from this website http://tefatronix.g6.cz/display.php?page=dflasher&lang=en
I entered it into LTspice, and for the life of me I cannot get it to simulate; particularly I do not see any RC charging/discharging going on. I tried expanding the simulation time super long (1500 seconds), and I see some minor variation in the LED current, but only a fraction of a pico Amp. I tried smaller resistor and cap values, but nothing seems to change.
I was able to get a different LED flasher (2-transistors, 8 parts) circuit to simulate, but this simpler circuit has me stumped.
LT spice file attached
I entered it into LTspice, and for the life of me I cannot get it to simulate; particularly I do not see any RC charging/discharging going on. I tried expanding the simulation time super long (1500 seconds), and I see some minor variation in the LED current, but only a fraction of a pico Amp. I tried smaller resistor and cap values, but nothing seems to change.
I was able to get a different LED flasher (2-transistors, 8 parts) circuit to simulate, but this simpler circuit has me stumped.
LT spice file attached
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