Universal 4 ~ 6V / 3.6V ~ 24V Servo Inverter Signal for Rc Servo for JR Futaba Plane V-tail _ - AliExpress Mobile
Amazon.com: 2Pcs Servo Signal Reverser Rotation Inverter 5.0-6.0v Steering Gear Reverser for JR Futaba Aircraft Airplane Steering Gear and Any Servos : Toys & Games
Signal servo inverter AESR010
STÖBER SDC 1014 Servo Inverter SDC1014 for sale online | eBay
Why are servo drives also called servo inverters, amplifiers, and controllers?