Hello all,
I am new to electronics and i need some support.
I have a digital integrated chip(shift register) with an DMOS open-drain output (from the datasheet -> 33 V and 100 mA continuous sink-current capability) and I want to drive a relay.
The output of the drain is connected to the relay, and then the relay is connected to the power supply 5V.
When the transistor from the digital integrate pulls the line to the ground, the output drain is 0 logic, but the relay is not switching.
What am I doing wrong ? The schematic I use is recommended for driving relays using this shift register (from the application notes of the shift register).
I am new to electronics and i need some support.
I have a digital integrated chip(shift register) with an DMOS open-drain output (from the datasheet -> 33 V and 100 mA continuous sink-current capability) and I want to drive a relay.
The output of the drain is connected to the relay, and then the relay is connected to the power supply 5V.
When the transistor from the digital integrate pulls the line to the ground, the output drain is 0 logic, but the relay is not switching.
What am I doing wrong ? The schematic I use is recommended for driving relays using this shift register (from the application notes of the shift register).