Projector Word Clock Sync.

Project design is to lock the motors of old 35mm film projectors to 48khz word clock. The word clock is supplies from the sound system. Design uses a PLL to multiply the 48khz clock to 24mhz. The 24mhz clock is then ran to a FPGA where the clock is further multiplied to 96mhz.(96mhz is the common frequency that all frame rate for the projector can be derived) Bi-phase is created in the FPGA circuit to drive the motor driver. Other monitoring and logic are also controlled by the FPGA's program. Stencil are well made and I'm very happy with PCBWay's product. Yes, I will use PCBWay again.

Nov 27,2022
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