AT89C51 单片机L298驱动电机，控制2个12V 直流电机。求PWM 调速的C程序，电路图，电机正反转C程序，流程图-AT89C51 microcontroller L298 drive motor, control two 12V DC motors. PWM speed control of C seeking procedures, schematics, motor reversing C program, flow chart

12V quasi sinewave inverter schematics in protel

一款升降压buck和boost电源板，采用dspic芯片全数字控制，输入12V，输出5V、20V；有原理图和代码。-A buck buck and boost power supply board with dspic chip digital control, input 12V, output 5V, 20V schematics and code.