Voltage converter's output compare circuit

The utility model relates to a voltage converter's output compare circuit, including voltage converter basic circuit, be connected with PWM control circuit in this basic circuit, its characterized inthat: still including input positive pole, input negative pole, output end of cathode, comparator, isolation opto -coupler and zener diode, comparator reverse end connects the benchmark circuit, and its syntropy end links to each other with the modulate circuit, comparator output and isolation light coupling connect, zener diode concatenates in comparator output and keeps apart between the opto -coupler, the beneficial effects of the utility model are that: carry out the comparison to output current, voltage and benchmark, guarantee the output of normal voltage, electric current, guarantee PWMcontrol circuit's stability. 本实用新型涉及电压转换器的输出比较电路，包括电压转换器基本电路，在该基本电路中连接有PWM控制电路，其特征在于：还包括有输入端正极、输入端负极、输出端负极、比较器、隔离光耦及稳压二极管，所述比较器反向端连接基准电路，其同向端与调理电路相连，所述比较器输出端与隔离光耦连接，所述稳压二极管串接于比较器输出端及隔离光耦之间，本实用新型的有益效果为：对输出电流、电压与基准进行比较，保证正常电压、电