hi,
The IRLML6402 is a P MOSFET, check the voltage polarities
E
Hi,
Doesn't the voltmeter show 9V at the drain?
Never let the gate floating.then after when i keep the gate pin floating
B2 has two connections, you only show one.i have a connected a LED to B2
Hi,
Never let the gate floating.
B2 has two connections, you only show one.
A Led has two connections. How you connected it is unclear.
--> show the complete schematic wher we can see your ON setup and OFF setup.
Klaus
Really? You have connected the gate to ground, Vgs = -9V, MOSFET permanently on.Complete circuit diagram attached.
Really? You have connected the gate to ground, Vgs = -9V, MOSFET permanently on.
If you want to further modify the schematic, please notice that Vgs has to be applied between gate and source. Source node is at input voltyage level (+9 V). To switch the MOSFET off, you'll apply Vgs < 0.5V respectively > 8.5 V relative to ground, to turn it on, Vgs > 2.5 V, respectively < 6.5 V relative to ground.
A 5V source referred to ground (e.g. a microcontroller IO pin) won't be able to switch the MOSFET off without a level shifter.
Really? You have connected the gate to ground, Vgs = -9V, MOSFET permanently on.
If you want to further modify the schematic, please notice that Vgs has to be applied between gate and source. Source node is at input voltyage level (+9 V). To switch the MOSFET off, you'll apply Vgs < 0.5V respectively > 8.5 V relative to ground, to turn it on, Vgs > 2.5 V, respectively < 6.5 V relative to ground.
A 5V source referred to ground (e.g. a microcontroller IO pin) won't be able to switch the MOSFET off without a level shifter.
why the voltage does not drops below 5v when gate is connected to (+).
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?