skyline79
Newbie level 2
hI,
I need help with what should be relatively simple problem. I have attached the circuit so far .
Basically I have a circuit that is summing two voltages. This part of the circuit works.
i then wanted to increase the output current capacity of the circuit to drive a larger load then what the LM124 or LM324 chip can handle.
So I added a TIP110 transistor to provide more current capacity and this sort of works. It follows the voltage and does provide more current capacity, however, when the output voltage is lower, under 10v the transistor heats up extremely quiock. Is there any other way to increase current capacity of the LM124 op amp so it can handle a continuous 1amp. (most likely current in real operation wil be 500mA but I want to have clearance in case future increase is required. Preferably I would want it to handle 500mA withpout to much temperature rise.
The current setup works ok when the output voltage is higher, closer to 22v but still gets warm. I have heat sink for now to dissappate the heat but it'll heat up enclosure that it is mountwed in..
Any help would be great
I need help with what should be relatively simple problem. I have attached the circuit so far .
Basically I have a circuit that is summing two voltages. This part of the circuit works.
i then wanted to increase the output current capacity of the circuit to drive a larger load then what the LM124 or LM324 chip can handle.
So I added a TIP110 transistor to provide more current capacity and this sort of works. It follows the voltage and does provide more current capacity, however, when the output voltage is lower, under 10v the transistor heats up extremely quiock. Is there any other way to increase current capacity of the LM124 op amp so it can handle a continuous 1amp. (most likely current in real operation wil be 500mA but I want to have clearance in case future increase is required. Preferably I would want it to handle 500mA withpout to much temperature rise.
The current setup works ok when the output voltage is higher, closer to 22v but still gets warm. I have heat sink for now to dissappate the heat but it'll heat up enclosure that it is mountwed in..
Any help would be great