Direct Replacement Feedback Amplifier
|As the Woodward Driver Amplifer board was phased out, the intermediate stage feedback was still required to properly control a proportional valve system. The Feedback Amplifer System was developed to provide this intermediate feedback.This electronic circuit board takes the distributing valve spool position signal (typically a LVDT voltage) and allows it to be scaled for proper oil system control. The Vout to Vin ratio is typically between 0.25 and 0.75.While there were a number of different Woodward configurations sold, they all operate using the same basic circuit and features.|
The new assembly has been designed to
fit in the existing enclosures.
The removable terminal block makes
field wiring and testing easy.
|American Governor Company offers a direct replacement for all the configurations. The AGC part Number is AGC-E030819. Some of the Woodward part numbers and boards that the AGC-E030819 replaces are listed below.|
|Woodward Part Numbers:|
|5453-628||Box Assembly – Feedback Amplifier|
|5503-222||Feedback Amplifier Board Only|
|9934-392||Feedback Amplifier Assembly|
|9934-393||Feedback Amplifier Schematic|
|3077-870||Base Board for Feedback Amplifier|
|This is not a comprehensive list because the Woodward part numbers
frequently changed. All the assemblies in the field have not yet been
Our feedback amplifier features:
• Reverse polarity protection.
• Convenient plug-in terminals.
• Removable DIP for quick field repair/replacement.
• Fits in existing enclosures.
• Broad calibration range for maximum flexibility.
• Bi-directional operation; polarity of output easily changed.
• MIL-Spec quality components.