Overclocked
Member
I am building a hot plate to heat things, I got the heaters from a grill cheese machine my mom was throwing out, so I kept the heating coils. They work, and when you plug them in, they glow bright red. I really wouldnt like to do that, since I fear if when Im heating what I want to heat, it will catch fire.
I measured its resistance (after cooling down to ambient) to be about 6.5 Ohms. I powered it using 120V, since thats what it was used for, but it was in series with another heater. The current required came out to be around 18 Amps! When I calculated power, I came out with something near 2.2kW!!! kw!!
Along with safety in mind, along with Enormous power requirements I decided to make a controller. I need controller to shutoff once it reaches a certain temp, but turn back on once it starts cooling.
**broken link removed**
Does this circuit turn the load On when the temp is below a certain temp and then turn it off when it is above that temp?
**broken link removed**
But whats the difference in function between these 2 circuits?
Would it also be Ok to use a 16 Amps relay even though my load is 18 Amps? Would it make a difference?
I measured its resistance (after cooling down to ambient) to be about 6.5 Ohms. I powered it using 120V, since thats what it was used for, but it was in series with another heater. The current required came out to be around 18 Amps! When I calculated power, I came out with something near 2.2kW!!! kw!!
Along with safety in mind, along with Enormous power requirements I decided to make a controller. I need controller to shutoff once it reaches a certain temp, but turn back on once it starts cooling.
**broken link removed**
Does this circuit turn the load On when the temp is below a certain temp and then turn it off when it is above that temp?
**broken link removed**
But whats the difference in function between these 2 circuits?
Would it also be Ok to use a 16 Amps relay even though my load is 18 Amps? Would it make a difference?
Last edited: