Current output circuit of DAC0832

In process computer control, O-10mA DC or 4mA-20mA DC current output is usually used, as shown in the figure. In the figure, the output current of
the D/A converter DAC0832 is converted into the output voltage V2 by the operational amplifiers A1 and A2, and then converted
into the output current Jo by the transistors VT1 and VT2. When 12 of the short-circuited column KA is connected, by adjusting the zero point potentiometer RP1 and the range-adjusting potentiometer RP2, a current of 0~10mA DC is provided for the external
load RL} When 1-3 of KA are short-circuited, by adjusting RPJ, and RP2. Provides 4-20rnA DC current .