I am attaching a drawing for a flickering LED solar charged , I am wanting to change the supply voltage to 2.4v ( from 2 x 1.2v Ni-MH ) and using 2 x solar panels from the pound shop ( giving out 5.6v ! ) , driving a flickering LED 1.8v to 2.2v .
What would I have to change to obtain my result ! .
Thanks for your reply , that is no goog to drive a flickering led because it gives a pulse which seems to not drive a flickering led , have tried it , I probably will use just one solar panel .
I do not know if a flickering LED needs a voltage higher than 2V which is a 2-cells almost dead Ni-MH battery. I think a solar panel that produces 5.6V has too much voltage for charging the 2-cells battery to 2.8V.
All my solar garden lights that drive a color changing LED use a 1N5817 Schottky diode feeding the positive pulses to a 0.1uF filter capacitor and the LED. The same color changing LED is used in little lights that are powered from 4.5V button cells battery in series with a 51 ohms resistor. Of course the solar garden lights use a single AAA Ni-MH battery cell that is charged from a series 1N5817 diode from a 2V solar panel. The voltage stepup and switching of the LED on in the dark and off in the daylight are in an IC. Sometimes the IC is in a 4-pins SIP and others are a blob on board.