The common controller is made up of single-chip 8031, interface chip 8279, ADC0809, DAC0832, etc. In I/O circuit, the multiplying electric circuit AD623, V/I switch circuit AD694 and isolating circuit is featured with stabilization and flexibility.
The reset circuit, clock circuit, power circuit, level switch circuit, memorizer interface circuit, A/D switch circuit, D/A switch circuit and serial communication interface circuit were designed. The functions of hardware had been debugged successfully.
5. Adopt zero-IF receiver program to design receiver circuit. Substitute multiplierand voltage comparator for A/D switch circuit in the zero-IF receiver program, therefore, the design is simplified and delicacy of the system are effectively enhanced.
In the antenna design simulation, again the FDTD is employed to analyze the entire antenna structure including the lumped elements of the p-i-n diode switching circuit.
The operation principle, the influence of mechanical parameters, the speed characteristics, the single-chip switching circuit and analysis of system efficiency are discussed.
The cathode-ray-tube display of a body plethysmograph is enhanced by a composite switching circuit, which displays an electronically generated angle cursor and plethysmograph parameters simultaneously on an accurate single beam oscilloscope.
Electrical properties of isolated frog primary afferent neurons were examined by suction pipette technique, which combines internal perfusion with current or voltage clamp using a switching circuit with a single electrode.
The circuit employs 9 operational transconductance amplifiers (OTAs) and CMOS transistors as switching circuit.