Hello everybody! I am a beginner in electronics and mechanical but i really want to know more in that field. Now, i want to make a remote control car with a high speed possible. I have already made one with a 3Volts DC MOTOR controlled by a PWM (LM555) and potential-meters, the power supply of the IC's is 9V, the directions of the motor is controlled by a switch SW-DPDT-MOM-8 connected to the motor. It works, it can run but it is slow. Now, i want to upgrade my car or even make a new one that can work with a much higher speed. I have read topics about "DC Motor control" and i got some on a motor controlled by a H-Brige. The problem here is that these H-Bridge (as i saw) are mostly controlled by PIC (Microcontrollers) and i didnt learn any thing about Microcontrollers. Now my questions are: 1. Is it possible to use an H-Bridge without using Microcontrollers. (My car is not yet to a wireless one). Here i want to know, if it is possible that i connect my PWModulators to the H-bridge. hence the H-bridge circuit should replace the switch that i used. 2. Which is most efficient between H-Bridge and Switch in controlling my car and boosting its speed. To increase the speed of the last car (the one with PWM and switches), i saw that it is done by changing the capacitors on the oscillator. 3. Wat should be then the max best frequency (and the capacitance) if i want to have a car with about 60-75MPH? Thanks in advance for yout help.