Jun 25, 2016 · It is possible that the 2n7000 is just one of those that doesn't turn on well at 5 volts to the gate, and is operating in the linear region enough to turn the LED on (with no dropping resistor!) but can't pass enough current, even with the 9v supply, to actuate the relay.

Dec 15, 2023 · The second relay has a lower operating voltage, but a higher operating current, so it still chatters. The solution is to change to a bipolar NPN transistor as a saturated switch. Use a base resistor of less than 470 ohms.

Feb 24, 2018 · 2n7000 is mostly used for low power switching applications. It is used as a driver for motors, relays and lamps. It is widely used in battery operated systems and solid state relays.

Feb 28, 2020 · The 2N7000 is an Enhancement-mode (normally-off) transistor that uses a vertical DMOS structure and a well-proven silicon gate manufacturing process. This combination produces a device with the power handling capabilities of bipolar transistors as well as the high input impedance and positive temperature coefficient inherent in MOS devices.

The 2N7000 is a N-Channel Enhancement Mode Field Effect Transistor, a.k.a. MOSFET for voltage controlled small signal switching. On a data sheet this MOSFET is shown to be capable of switching 200ma with a 60V rating.

Sep 21, 2010 · If you prefer to use discrete transistors, use 2N7000 MOSFETs. Connect each gate to an Arduino output, each source to ground, and each drain to a relay coil. If the relays don't have diodes across the coils, you will need to add a 1N4148 from each drain to +12V.

Jul 12, 2024 · I need to control a 12v relay with an Arduino nano ESP32. Can somebody check if the circuit I designed is good? Components list: MOSFET: 2N7000 (N-channel); Optocoupler: PC817; Diode: 1N4007; Rela...

Jul 12, 2024 · I need to control a 12v relay with an Arduino nano ESP32. Can somebody check if the circuit I designed is good? Components list: MOSFET: 2N7000 Optocoupler: PC817 Diode: 1N4007 Relay: 40.31.7.012.0000 (coil needs 42mA @ 12V) Please find attached the picture with the circuit I made. (Updated 13/7/24)

Sep 6, 2014 · If the Vcc for relay is 5V then you still got the chance to drive the mosfet using 3.3V. The idea as below, you can try it : 3.3V → (-)Diode(+)(-)Diode(+) → Vgs (2N7000) Vgs adding a 2.2K ~4.7K to +5V. The diodes are using 2 1N4148 in series. If it doesn't work then please describe the status.

Apr 8, 2022 · The 2N7000 is a logic level switched MOSFET and the 2N2222 is a BJT commonly used for switching. Look at the PDF specs for the relay coil then compare them to the transistor PDF to ensure it will not be overloaded.