Can someone please tell me why this does not work properly? Only difference from diagram (link below) is the 1k resistor providing a slight load, middle-bottom. What I don't understand is how the voltage can go to 0 even when the capacitor still has charge.
As found in Figure 1 here: http://www.edn.com/design/analog/4345674/Use-a-555-timer-as-a-switch-mode-power-supply