D/a conversion circuit of nc engraving machine system
CNC engraving machine systems need to analog signals in real-time control on the spot, ningbo yuan yifan, CNC engraving machine co. , LTD. The designed system USES the digital to analog conversion circuit, selection of DA device is LINEAR LTC2654I produced by our company, this is a 16-bit high-speed 4 channel industrial-grade DA chip. This part of the specific circuit as shown in the figure below, the figure of 5 v power supply to use 100 & mu; H inductors, isolated from other parts of the interference, the DA the final output is a voltage signal, in order to improve the driving ability of the voltage signal, the system USES the voltage series negative feedback circuit for processing, figure draw only one circuit, operational amplifier USES is LM324, this part of the circuit has a lot of input impedance, output impedance is very small, so the load ability is very strong. Figure d/a conversion circuit engraving machine prices, engraving and milling machine, CNC engraving machine price information in yifan numerical control net.