transistors

Hi everyone, I have been researching this topic for the last seven months without success and this is the first time I have posted on a forum asking for help. I have no training in electronics. I work as a sculptor and have started integrating "simple" (although, not for me) electronics into...

Hi guys, First, let me preface, I'm a software engineer, I know some things about electronics, but designing circuits wouldn't be my forte... I'm a hobbyist at best :) I'm playing around with some WS2812B strips, and want to add some bling to my motorbike. The strips would be controlled using...

Hey everyone, I have a latch circuit designed for powering an ESP32. Here's how the circuit operates: when the SW6 button is pressed, it activates transistor Q6 NPN, which, in turn, opens the U1 MOSFET to power the MCU. Once the MCU boots up, it sets pin D8 to HIGH, which activates transistor...

Transistor FNCS 0014 and FANC 0070 substitutes

I was considering using a Rele but they don't work very well with high current (the ones that work are expensive) since its a high current I need the circuit to hold and at the same time not have much resistance when the current is passing through it. Is there any circuit I could use? I think...

Found this simple circuit on youtube and I'd like to know the equation for how to vary R and C to change the flashing frequency. Also, how to increase the current through the led with 3.3 V battery as power source to maximize brightness.

How to use mesh current analysis instead of thevenin's theorem here to solve for all currents and voltages in the following bjt circuit? How should i make the closed loops in order to analyse?

Could somebody explain the working of common base and common collector transistor configurations?How do the electrons begin flowing in these configurations?

I dont know much about electronics.While studying about transistors,i had a doubt about the middle layer.If the emitter and middle layer becomes forward biased, and collector and middle layer becomes reverse biased,how does middle layer have both the charge in order to get reverse and forward...

Hi all, I want to implement a H-bridge driver circuit. May I know how to make some changes to the circuit above so that it forms a full-H-bridge using transistors. I attached my LT Spice file below :) Thank you for reading.

Hi readers, When I used this IRF 3205 which has high capacitance between the Gate-Source of the mosfet, whenever I add a lower pull-down resistor, the switching becomes faster and faster (visible nice square wave). For my case, for IRF 3205 to fast switching at 20kHz (nice square wave), it would...

I have build a differential amplifier comparator and it works fine except that instead of switching voltage between zero and 5v, it toggles it between 3.5v and 5v. So, I would like to know if there's a way to make it switch between 0-5v. The schematic is as follows

Above is the graph across R7 (Load). Hi readers, Flip Flop with Ne555 timer means turning on an led and another one off, as shown in picture, and this alternate on and off pattern continues. This video can be found at Click Here . I have succeeded in amplifying one of the 2 signal as shown in...

Hi, I want to study about BJT Common Emitter Large (or bias) and Small Amplifier Circuits. My question is I could not find a decent sufficient resource neither from youtube nor from google. :( I want to study about those common emitter large & small signal models, analysis, ac gain, input &...

Hello, I have a 1980 Peavey Centurion Mark III head that was buried in my garage unused for 15 years. I knew it had problems (it's not mine, i got it from a friend who was throwing it) so before doing something i checked all the components and everything looked great. Once done I plugged it to...

This is from an adblue ecu circuit for Citroen/ Peugeot cars. I need help identifying these components. Thanks for all your replies! The first one has 3 pins with the letters CG and a Y that's horizontal (on another board it shows CG with a U that's horizontal). The second one that's...

Hello, in the following image you can see a circuit with a npn transistor. I marked the given values with red and the unknown with blue. Below the circuit you can see my calculations and solutions. I'm stuck at finding I1. I would be very thankful for some guidance.

Please can anyone help me determine what type and model of transistor this psu uses(voltage, amp, etc), the one it had were removed and I have no idea what Trans use D:

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?

Hello, I have been looking for a solution for my abs lamp in my car. Now, this might not be car site or something like that but it is somewhat related to this site. Here is the problem: When I am starting my car, abs lamp should be on for a few seconds and than off. The only problem is that...