Hello
I built this circuit today, its a pyrography tool for burning wood, to make pictures, decorating etc...
I have connected the nichrome wire (toaster wire at the moment for testing) as shown in the diagram
When I switch on, the toaster wire glows nicely providing you cut it at the right length, unfortunately when I adjust the pot I get no obvious change in heat output on the toaster wire,
I dont have any understanding of electronics, only a simple grasp of electricity, so go easy please
I have checked all my part numbers and connections a few times, I have also swapped the timer and transistor for new ones incase I burnt them while soldering,
Can anyone offer some advise where to start troubleshooting, I have only a basic DMM
(my diode is the right way round, and I definately have the wiper connected to pin 7)
thanks
Will
I built this circuit today, its a pyrography tool for burning wood, to make pictures, decorating etc...
I have connected the nichrome wire (toaster wire at the moment for testing) as shown in the diagram
When I switch on, the toaster wire glows nicely providing you cut it at the right length, unfortunately when I adjust the pot I get no obvious change in heat output on the toaster wire,
I dont have any understanding of electronics, only a simple grasp of electricity, so go easy please
I have checked all my part numbers and connections a few times, I have also swapped the timer and transistor for new ones incase I burnt them while soldering,
Can anyone offer some advise where to start troubleshooting, I have only a basic DMM
(my diode is the right way round, and I definately have the wiper connected to pin 7)
thanks
Will