you mean the auxiliary contact? It surely must not open as long as the relay is in "hold" state.the auxiliary coil
The lifetime is given in count of contact operations. It does not depend (much) on power reduction.do you know what the lifetime reduction might be?
It's a power, not a signal relays. Minimal switching current/voltage is specified as 100mA/5V for the main contacts.switching very low current
Less effective? It really depends on what's important to you: power efficiency or cost and reliability.Hi,
True, it is simpler but less effective.
Reducing the coil current to 30% with an ideal PWM circuit reduces the overall power (dissipated as heat) to 9%.
Reducing the coil current to 30% with a resistor (diode, transistor...) reduces the overall power to 30% only. This is 3.3 times than with PWM.
Klaus
I clearly talked about power efficiency.Less effective? It really depends on what's important to you: power efficiency or cost and reliability.
The TS mentioned power dissipation, so I assume that is important to him.Less effective? It really depends on what's important to you: power efficiency or cost and reliability.
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