Hi guys
In a simple thermal control circuit, I have the output from LM339 to switch my heater on or off. Goes through 2k to the base of the BFY50, with 5k pull up to 5V, and 1k pull down to 0v. The heater is a 47 ohm resistor and it controls a treat with the collector voltage oscillating between 1-2.5 V every couple of seconds, ie never hard one way or the other. It doesn't get hot. Can anyone tell me, is it ok to use it this way or will it go pop in time? (I've always thought of trannies as switches)
Thanks in advance
Mike
In a simple thermal control circuit, I have the output from LM339 to switch my heater on or off. Goes through 2k to the base of the BFY50, with 5k pull up to 5V, and 1k pull down to 0v. The heater is a 47 ohm resistor and it controls a treat with the collector voltage oscillating between 1-2.5 V every couple of seconds, ie never hard one way or the other. It doesn't get hot. Can anyone tell me, is it ok to use it this way or will it go pop in time? (I've always thought of trannies as switches)
Thanks in advance
Mike