After some testing of the circuits on my web page some minor changes are recommended. I have removed 2 diodes and changed capacitor values on the power supply circuit so the maximum track voltage is above 12V. The original circuit resulted in a 10V maximum. On the block circuit diagram I have added
2 diodes to improve protection of the output transistors and increased the value of the track filter capacitor to limit unwanted electrical spikes from motors.- posted
19 years ago