Hey guys ive been working on a dimmer for some Lights that are going into a trailer for lights over an oven. I have been working on the circuit for about two weeks and couldnt figure out what the problem was. I followed the schematic here:
http://www.reuk.co.uk/LED-Dimmer-Circuit.htm
It doesnt really tell me what i need to know as far as frequencies or power ratings.
It says to have a 1k resistor between pin 3 and the transistor( i used FJE3303H2TU-ND) because i will have more than 600 MA going through the circuit to replace the fluorescent bulbs. i have the circuit working but at about half brightness of the leds the timer gets super hot and i was wondering if anyone knew if it was from not running a 1k resistor between the chip and the transistor. If i put that resistor back in, the leds are always on.
I am trying to learn these things myself in my spare time and dont understand the gains or frequencies involved in this ciruit and how they interact with each other.
I am using an NE555 texas instruments chip.
I would appreciate any help, Thanks!
http://www.reuk.co.uk/LED-Dimmer-Circuit.htm
It doesnt really tell me what i need to know as far as frequencies or power ratings.
It says to have a 1k resistor between pin 3 and the transistor( i used FJE3303H2TU-ND) because i will have more than 600 MA going through the circuit to replace the fluorescent bulbs. i have the circuit working but at about half brightness of the leds the timer gets super hot and i was wondering if anyone knew if it was from not running a 1k resistor between the chip and the transistor. If i put that resistor back in, the leds are always on.
I am trying to learn these things myself in my spare time and dont understand the gains or frequencies involved in this ciruit and how they interact with each other.
I am using an NE555 texas instruments chip.
I would appreciate any help, Thanks!