1. T

    Understanding P-channel Mosfet Datasheet Plots

    I'm working with this p-channel mosfet and got confused by the plots on page 3. In particular the top right plot showing the Drain Current over V_GS (voltage from gate to source). As a p-channel mosfet, I would expect the drain current to go towards infinity as V_GS approached the Gate-Source...
  2. R

    Control TECs with Arduino and MOSFET

    Hi everyone, I've been reading many forum posts and articles about MOSFETS and reading their datasheets. Although I'm getting more comfortable with the topic, I still have a lot of questions. As I'm running out of time due to a timeline on my project, I decided to ask for help and see if what...
  3. A

    Current dependant load switch, cant solve it passively?

    Hey there, i couldn’t fall asleep trying to solve following scenario: i have two power supplies running 24vdc in parallel, a main and one supplemental power supply. Both are being filtered with capacitors before supplying a single load. Now if one wants to run it, such that the supplemental...
  4. CRISHCREATIVE

    Equivalent MOSFET

    Hi, any idea of equivalent MOSFET, Transistor and IC given below. 1. 2SD1761EF 2. 2SB1187EF Transistors 3. 2SC3402 4. 2SD1387 and IC 5. M5230L These are the damaged components of my Sony Cassette Deck, model STR H100. And what is the symbol of the this ? (image2)
  5. G

    H bridge problems using IR2110

    Hello, I designed attached circuit to drive H Bridge. My generated input signals are in attached picture, duty cyce that I am using is 40% for each signal, 99 kHz frequency. As result I am getting really bad shape of signal on R9 resistor. I am no getting steep signal when I turning H bridge...
  6. K

    Mosfet not switching off with solenoid valve.

    I want to switch on a 12V 1A(peak 1.4A) solenoid valve for 0.1-3 seconds(set using a trimpot) and then switch it off. I'm using 555(operating at 5V, triggered by a IR sensor which operates on 5V only) in monostable mode to generate a 0.1-3s pulse, which is fed directly to gate of mosfet(IRF540-...
  7. K

    N-MOS voltage drop at DS

    Hi, Just want to ask is it normal to have a high voltage drop across drain and source of the n-mos? The VBAT node is at 3.6V while the VDD_MAIN node is at 2.7V. Gate voltage is at 3.37V.
  8. anditechnovire

    Depletion mode MOSFET

    Since the depletion type or depletion mode mosfet is "normally close", does it mean it does not require any gate voltage to "turn ON"? i.e current can flow in the drain-source circuit easily without any gate turn on voltage. And hence no threshold voltage is applicable?
  9. Rossosaurus

    Need a hand understanding a section on datasheet example schematic (CYPD3177 USB-C Controller)

    Hi all. I'm currently designing a circuit using a CYPD3177 USB Type C Controller to change the output voltage of a USB C power supply with power delivery support. I was looking at the example schematic in the datasheet to understand how the chip is used but I'm struggling to get my head around...
  10. shibin_varghese

    Current limiting circuit

    Hai Friends. The above given is a current limiting circuit one I found from google. https://electronics.stackexchange.com/questions/200716/current-limiting-with-mosfet Can anyone explain how the circuit works?.
  11. Joaquin Valdez 1

    HFSSTC-Increase Current in primary/Reducing Switching Loss

    Hello, I have been build this high frequency solid state tesla coil for a while now and have tried quite a few different circuit with some success but ultimately I have fry a lot mosfets in the process, so far this is best I have came up with but I have a few problems. 1. Alot of these hfsstc...
  12. E

    DC biasing, headroom, clipping in MOSFET amplifiers

    Okay so my question relates to biasing and threshold voltage in a MOSFET amplifier. So in an amplifier the clipping occurs when the signal hits the power rails according to all the reading I’ve done. That’s how much voltage swing you supposedly have before clipping. So if you have an 18 volt...
  13. Electronic_Maniac

    Identify the Maximum Voltage that can be applied across Zener, MOSFET and Transistor

    In many Zener Diode datasheets, I have witnessed that in the Absolute Maximum Ratings section, they don't include the "Maximum Voltage" that can be applied to the Zener diode. If the applied voltage crosses the Zener breakdown voltage, then the voltage will start to conduct and will enter in the...
  14. aadi2096

    Heating control of a Induction Heater

    Hi Guys, I have been looking around and working with the ZVS IH for a while now. But the problem is that it needs huge current in low voltage. I was thinking of a High voltage Low current IH. But couldn't find any thing good. My main motto here is to control the heating effect. I am trying to...
  15. Luiz Fernando Vieira

    Cadence simulation NMOS and PMOS

    Hello everyone, I'm having difficulty simulating CADENCE, NMOS AND PMOS components are NOT enabled when making modifications, such as inserting values of width or length of their structures in the schematic [schematic]. It is impossible to do the simulation. And in the layout there is no icon...
  16. J

    Basic Question NMOS Gate Leakage

    Hello, I'm not quite sure about the specification of Gate-to-Source Forward Leakage (I_gss) given in many datasheets of MOS-FETs. I researched its definition and it seems to be the leakage current (for specific gate-source voltage), that flows from gate to source, while drain and source are...
  17. G

    Help Identifying Component

    This part came off an ESC on a drone. I think it's a fet but can't find any info..Please help.
  18. Theo_KVA

    Electrical switch for a non-chemical battery - How to do it?

    Hi everyone, I’m seeking guidance. I have a tricky situation which I don’t really know how to get out of. I want to design a system which would consume the least amount of power possible. The idea is to have an ESP8266 do a simple task every minute (updating a e-paper display) and sleep the...
  19. R

    Arduino Mega 2560 controlled MPPT charge controller for small wind turbine.

    I am in the process of designing a MPPT controller for a wind turbine. There are plenty of MPPT boards (with BQ24650 MPPT charge controller ICs) but these are fixed voltage MPPT designs tailored for photovoltaic applications. So I decided to make a simple DC converter (buck boost design, non...
  20. UrielML96

    AGC with FET

    hello, I have to build an automatic gain control using an FET and an Operational Amplifier, for a phototransistor (SFH314) so that when the signal of an IR LED is weak the AGC maintains the signal, and when the signal is strong reduces it, the gate of the FET I have to control it with the...
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