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  1. heathtech

    h-bridge dc motor control circuit Reworked

    I am going to try adding the second power supply and testing the circuit. I know for a fact that when the leads to the motor are disconnected and the logic circuitry is allowed to work without a load (i.e. I interrupt the optical sensor with a piece of paper and read the voltage at the h-bridge...
  2. heathtech

    h-bridge dc motor control circuit Reworked

    The switch from forward to reverse is intantaneous. There is no pause or delay between polarity changes. Another tech suggested that I condition my sensor signal with a scmitt trigger. He said the edge triggered flip flop might be sensitive to unclean input signals. What do you think? Any...
  3. heathtech

    h-bridge dc motor control circuit Reworked

    Thanks Ante, The encoder is LED with an amplifier output. I need to do some modifications to the schematic, I'll try to post it later. However, I have turned off the room lights and encounter the same problem. Secondly, the motor is a gearmotor, i.e. the shaft turns at only 1/3 rev/ second. One...
  4. heathtech

    h-bridge dc motor control circuit Reworked

    I am designing a simple dc motor control circuit using a single 4013 cmos edge triggered d-style flip flop with the q-bar output fed back to the data input. The set and reset inputs are at ground potential. The clock pulse input is being used to toggle the outputs of the flip flop. Each high...
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