Brief Description: This module is used for driving the servo-valve. The voltage input is converted to a current output to drive the servo-motor. This module also provides a current source on the front panel. Essentially this module is a voltage to current converter and is used to drive servo-valves.
The schematic of a typical Servo Amplifier is presented below. To enlarge the schematic, click on it.
This schematic gives an example of a circuit for a Servo-Motor Amplifier. The circuit shown here is a 0.2 Amp Servo-Motor Amplifier. The power source used in this case is +/- 30 Volts.
One input, V1, is applied by the BNC connector on the front panel.
Two outputs channels are provided on the output. One is for driving the servo-motor. The second is a current source (v to i).
The figure above shows the schematic of the Servo Amplifier Module used in this lab.
To input the desired voltage to drive the servo-motor connect a BNC connector to the input channel marked in. The desired output driving current is set by the user selecting the input voltage to this module.
· 1 LH0021CK Operational Amplifier
· Dielectric Capacitors
· +/- 10% Resistors
· 1 Circular connector (Cannon)
This module requires +/- 15 Volt power supply to operate.
The Current Output levels for this module are:
Input Voltage Volts (DC) |
Output Current Amps (DC) |
0 - 3.99 |
0.00 |
4 - 9.99 |
-0.01 |
10 - 15 |
-0.02 |