Hardware manual

LT System General Rules for Implementing

Protective circuit B: this protection circuit can be used for DC load power circuits and

source outputs (positive logic).

Protective circuit B: this protection circuit can be used for DC load

power circuits and

sink outputs (negative logic).

Use a diode with the following ratings:

z Reverse withstand voltage: power voltage of the load circuit x 10.

z Forward current: more than the load current.

Protective circuit C: this protection circuit

can be used for DC load power circuits and

source outputs (positive logic).

Protective circuit C: this protection circuit

can be used for DC load power circuits and

sink outputs (negative logic).

z In applications where the inductive load is switched on and off frequently and/or

rapidly, ensure that the continuous energy rating (J) of the varistor exceeds the

peak load energy by 20% or more.