Coper
Member level 4
I am reconstructing a device in which the author used isolted amplifier IPACPL- 782T for monitor level of DC voltage..
Nothing complicated. The DC voltage, typically 325V, is sensed by an isolating amplifier via a resistive divider.
On the isolated side it is processed by a differential amplifier and ADC (SR 40kHz) is measured.
The whole thing serves as undervoltage or overvoltage protection.
The amplifier is difficult to access and expensive in our country.
Can you advise another solution with 0-2.5V analog signal conversion via isolation barrier?
Paradoxically, it is cheaper to put a small MCU on the non-insulating side and only convert the DC error signal across the isolation barrier, but there may also be a cheaper solution with analog information conversion.
Nothing complicated. The DC voltage, typically 325V, is sensed by an isolating amplifier via a resistive divider.
On the isolated side it is processed by a differential amplifier and ADC (SR 40kHz) is measured.
The whole thing serves as undervoltage or overvoltage protection.
The amplifier is difficult to access and expensive in our country.
Can you advise another solution with 0-2.5V analog signal conversion via isolation barrier?
Paradoxically, it is cheaper to put a small MCU on the non-insulating side and only convert the DC error signal across the isolation barrier, but there may also be a cheaper solution with analog information conversion.
