hello
in the bellow picture is a test method im trying to make it work
--if succeeded i will implement it in my Led clock project
--im making a four 7 segment led using 12V led strips as 3x3 bits for every segment
--the method to control the the segments is by using the 74595 shift register to call each led
--and using the "high side" "low side" transistors as switch to call the leds
--by making a common amongst the led {common cathode or anode}
any way i have very little information to rely on and need an expert opinion
is the circuit in the diagram correct
Mod: Wrong image posted, Deleted, please repost.E
if yes how can i calculate the resistance value for R1, R2 , R3?
what are the power rating should i be using ?
i used for the low side switch R3=300ohms
and for the high side switch R1=R2=1Kohms
but when i tried it the Q2 transistor was getting really hot
as for the arduino code a simple blink for the digital pin high and low states
in the bellow picture is a test method im trying to make it work
--if succeeded i will implement it in my Led clock project
--im making a four 7 segment led using 12V led strips as 3x3 bits for every segment
--the method to control the the segments is by using the 74595 shift register to call each led
--and using the "high side" "low side" transistors as switch to call the leds
--by making a common amongst the led {common cathode or anode}
any way i have very little information to rely on and need an expert opinion
is the circuit in the diagram correct
Mod: Wrong image posted, Deleted, please repost.E
if yes how can i calculate the resistance value for R1, R2 , R3?
what are the power rating should i be using ?
i used for the low side switch R3=300ohms
and for the high side switch R1=R2=1Kohms
but when i tried it the Q2 transistor was getting really hot
as for the arduino code a simple blink for the digital pin high and low states
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