Part Number: OPA549
Hi Dennis,
I need to build a circuit using an OPA549 to replace a servo amplifier that uses an EM-1803, without changing the motor. Firstly, since the OPA549 has only one output, I think a BTL configuration with two OPA549s is necessary. Also, the EM-1803 output generates a 15V DC offset, which the module creates automatically. I need help determining how to apply this DC offset. I can send the schematic of my current EM-1803 circuit.
Hey M. Bulent,
I remember supporting this thread a while back. I think the big question was in regards to motor impedance and required power to operate the servo.
Feel free to send over the schematic, this could help with designing the new circuit. What are the supply rails to the power amp? It would also be nice to know what the input signal is.
Here is an example BTL circuit, though we would need to get rid of the AC coupling cap for the servo application:
Thanks,
Jacob
Hi Jacob,
Sorry for name. I've now reached the amplifier board in the project; the other boards just ran out. Meanwhile, while researching documentation, I found a circuit like the one below. It seem good solution for my system. As i said befofe our motor connected two outputs of the EM-1803,I purchased a circuit from an internet site below for testing. I will use two of these to create a BTL (Bottom-Line) configuration and test it. I will share the results with you.
