Synchro Transmitter/Receiver Test Set

This project comprises a synchro transmitter / receiver and includes an in-built reference oscillator capable of providing a 26V RMS (74Vpp) 400Hz excitation signal. The transmitter and receiver are completely separate circuits and may be operated independently or simultaneously. The internal reference may be disabled and an external signal applied if required. Receiver: 14 bit ADC with 4 channels simultaneously sampled at 250ksps Analog front end allows +/- 48V input (supports 26VAC RMS synchros) FPGA uses Scott-T transform for calculating synchro and resolver angles Multiplexed 4 digit, 7 segment display wth 0.1 degree resolution Transmitter: COTS mechanical synchro, P/N: TGH-11-H-5/B329 Infinitely variable angle Rotor: 1 Phase, 26V, 400Hz Stator: 3 Phase, 11.8V Excitation: Op-amp phase-shift oscillator tuned for 400Hz (shared at OSH Park) TDA8932 35W audio amplifier provides buffering and high current output

Block diagram:	Amplifier:	Oscillator:
0 degrees:	90 degrees:	180 degrees:	270 degrees: