led supply SOLVED

Me Alice, studying.

I want to clear 1 doubt regarding electronics

I made a circuit with 100 LED's (MULTI COLOUR) . I connected the LED s in SERIES but I don"t know the specification of supply voltage that i want to use.

Can you please suggest the DC supply voltage for 100 LED s in series. Specification with (Volt, Amp)

by alicejavailble
June 22, 2018

2 Answers

Answer by mikerogerswsm

You need about 2V per led ie 200V dc at 20mA. This can be dangerous, so a better way to use them would be for example 10 parallel paths with 10 leds in series in each path. You then need about 20V at 200mA. Each string of leds should have a current limiting resistor in series to define the current. This might be 22 ohms 1W.

ACCEPTED +1 vote
by mikerogerswsm
June 22, 2018

Answer by alicejavailble


for just clarification 24V DC with 500mA is Ok for the above mentioned circuit with 22Ohms 1Watt resistor in each parallel circuit

is this k

+1 vote
by alicejavailble
June 27, 2018

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