I am trying to understand this circuit. I understand: current R1 is 0.02 ma, current at B1 ocurrs only if there is current at B2, no current flows thru D or E after capacitor is full, max current thru R2 40ma. I would appreciate, in laymans terms, what is happening when the circuit is started (LED off) and then what is happening when when LED flashes. Some approx current numbers for each phase would be good. Explanation how R2 works as I am only familiar with a current limiting resistor in line with the LED. Also how/when the capacitor discharges.
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