modified 1 year ago

key2

00:57:34

транзисторный ключ

published 1 year ago

Redstone_guy

1 year ago

The relay contacts cannot be closed because not enough voltage is flowing through the relay coil

Redstone_guy

1 year ago

If you take a look at the relay settings, you will notice that the Must Operate Voltage is set to 3.5V. This means that the voltage drop across the relay coil must be 3.5V or higher in order to be energized and close the contacts. You might also notice the Must Release Voltage setting. This is the maximum voltage drop across the coil required in order to switch the contacts again. Yes, if the voltage drop is between the Must Operate and Must Release voltages, the contacts remain in their current state. This is known as hysteresis

Redstone_guy

1 year ago

To fix this, replace the resistor that connects the NPN transistor to the switch with a wire

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.