First, I apologize that my English is not very good and at times I use google translator
But most of them understand words
I decided to buy a soldering station, but those who themselves control the temperature sensor and heater use - were quite expensive in my city.
After reading information on the internet - I saw that they are working on 24 volts.
I had an old transformer - which I rewound the throttle from a street lamp - and has output parameters:
no load at the output 25.4V After turning on the car lamp series connect 40 watts + 45 watts = voltage is 23.4 volts - the current in the lamp is 3.8A.
Once convinced that the transformer does not hum and gives a current that I need - I decided to use it. Maybe the voltage is slightly below the required 24 volts, but it will do the job
I liked the controller Hakko 936 - that no digital thermometer for temperature visualization.
After I saw pdf - I thought it might add thermometer.
Give advice if possible.
schemes applied to the controller which costs $ 13
After the thermocouple - signal is amplified by IC2D and IC2A and feed triac driver -> IC1 turning the triac. Something like a comparator - am I right or not ?
If I take the amplified signal from the thermocouple by foot "pin4 IC1" if there will be a disruption in the operation of the scheme.
I found two schemes thermometer - but if you can give me a better option.
translate from RUS to ENG
But if you can offer me icl7107 scheme to 500 degrees Celsius - I would be grateful