Phil
I have remove the L297 from the circuit and checked the power, the ground and the +5V control voltage in the L298.
When In1 and In2 were in opposite logic states and EnaA high, no tension is reading between out 1 and out2. The same thing happens with In3, In4 and EnaB.
I work with a power voltage of 25 volts with a load of 15 ohms in the outputs.
I have changed several L298 thinking they were burnt and, if this is so, I do not understand why it happens. I am lost.
Raśl |