2N7002 LED DRIVER

Interesting simulation results on this one. Tp represents the high-time for your PWM signal. Home Questions Tags Users Unanswered. There is a huge variety. It works like a charm, and the IR range was very good.

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I’m also seeing elsewhere though lef the internet that typical current draw should be mA. Used 5V from uC to drive the circuit, toggling it on and off every second.

failure – Burnt MOSFET in the following circuit. Why? – Electrical Engineering Stack Exchange

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LED Digit Driver

Vgsth is about 2. Anindo Ghosh 46k 7 84 The question is, what is a good way to drive them? And can anyone please recommend a transistor that would effectively allow me in this situation to create a switch to drive the white LED with the use a 5V signal and a 7. Home Questions Tags Users Unanswered. I used that because I have it ready in my components box: Lex if the actual Vgs th is just a little higher which I suspect it is it’ll be too deep in the linear region to conduct enough current.

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Neither this Agreement, nor any of the rights or obligations herein, 2n702 be assigned or transferred by Licensee without the express prior written consent of ON Semiconductor, and any attempt to do so in violation of the foregoing shall be null and void. For so few digits, I may end up biting the bullet and using discrete PNP’s. Home Questions Tags Users Unanswered.

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Then important point here is that the FET is controlled by the gate-to-source voltage, not the gate-to-ground voltage. Email Required, but never shown.

In this circuit the 5V will be between gate and source which will turn the NMOS full on which is what you need. I am measuring with the scope and I can see 5V at the gate but there is no voltage drop at the load.

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2N7002: N-Channel Enhancement Mode Field Effect Transistor 60V, 0.115A, 7.5Ω

Please allow lled days for a response. Possible Analog vs chassis ground issue? I know I could do this differently but I just would like to understand the reason.

Interesting simulation results on this one. Post as a guest Name. Sign up using Email and Password. Within 30 days after the termination of the Agreement, Licensee shall furnish a statement certifying that all Content and related documentation have been destroyed or returned to ON Semiconductor.