electronic circuit

Hi all, I am currently reviewing this Degson DG2002-4.0 connector. https://www.degson.com/content/details_123_10715.html May I know what does the arrow above the connector mean? And what do the holes beside the arrow does? Based on the photo below, there is this operating tool which can be...

I need to design this circuit with a gain of 26 for signals where the frequency varies from 800Hz to 8kHz and I also need to find out the current on the RL load. (VA = 100mV) Will C1 behave like an open circuit in ac analysis? I am getting to lower the frequency (800Hz) but I am not able to...

Hi, I would like to request help from anyone who can help. I am currently doing a project which is creating a simple dispenser. This dispenser requires a programmable timer which when activated will cause a motor to rotate a piece of acrylic for about 0.75-1sec to release sand granules. The...

Okay so I have a project due tomorrow and I can't get it right, I need to find how many Ohms is the resistor Rb, the link is a screenshot to the task UBX is Uin. https://prnt.sc/t92gbh

A sinusoidal voltage has a value of 80 V at 2.4 ms and it takes time of 20 ms to complete one cycle. Determine the maximum value and time to reach it for the first time after zero

Hello! I'm just a begginer student. I found this circuit of a wattmeter that works only with resistors. Can someone explain to me how the 33k resistor give a voltage of 1 mV to 1 Watt? I did not understand why these resistor values has been chosen and why the it measures only in the 33k...

Hi I'm currently stuck on current question. Consider the following OP amp circuit in . Obtain the gain vo/vi of the amplifier. What I can see is I can find the voltage on positive and negative pin of top OP amp, which is 30/50*vi (because positive pin of top OP amp is in parallel with 30...

Thank you

Hi everyone, I was looking for answers on google and stumbled upon this forum so I figured I might aswell directly ask my questions here =) I'm trying to mod a Guitar Hero controller (RedOctane Xplorer for Xbox 360) and part of what I wanted to do was adding a usb HUB inside the controller to...

Hello! I am a computer science and AI student, but I am getting into hardware. Over the last few weeks, I have become rather adept at designing circuits and PCBs (I might have audited a couple of courses but that doesn't matter... right?). I have designed my own version of a maker board --...

Hi Everyone, my DT project includes an inductive charger. I would like to build a circuit that when a voltage is received from the inductive charger (9Vdc in ~5Vdc out) one LED blinks then after 10s it remains constant. Then turns off when voltage is stopped. I’m not entirely sure how to go...