Hello, I need to control 6 DC motors, direction and speed. H-bridge would be great, but i would need 24 transistors. I found simple schematic, with one relay for controlling direction and one transistor for controlling speed. I have one question, in H-bridge there are protective diodes on transistor, but in this schematic with relay I've got no idea how to connect it or if I have to connect it at all. (only on transistor for controlling speed). I appreciate all answers.
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