circuit design

Hi everyone, I am currently working a simple 8-bit hobby processor design. I am still in the early phases of designing the processor logic and haven't started on the actual circuit. Premise: my processor's control unit design was inspired by what Ben Eater has done in his project: basically...

So I've been recently trying to build a simple class D amplifier, I've seen through the block diagrams and design considerations online, but recently came across an Amplifier design which doesn't seems to fit the majority of the circuits online. So in the input stage we use a comparator to...

My project purpose is that when you hold hands with a friend the passage of electric current through a circuit is enough to turn a buzzer or the ISD1820 voice recorder speaker. My first idea it to use the circuit below as reference, but I have no idea which transistor I should use to have...

Hello Guys, Im currently in the process of designing and then building a robotic arm. And now im designing the electronics for it. They should be pretty simple "i hope". I've attached a picture of the circuit that I am currently designing on, and maybe you notice im not an electrical engineer...

Hi there, I am trying to create a circuit to measure humidity in the air. When I try to interpret the values obtained, they do not correspond to the table of values that the manufacturer of the HR202L provides. Could someone explain to me the possible errors in my circuit or my calculations...

Overview - I would like to install an Apple AirTag in a vehicle and have it gets its primary power from the vehicle's 12V battery. In the event that the 12V Battery is disconnected, I would like for a backup 3V Battery to continue to provide the power required to run the AirTag. Approach -...

This is an 8 function led strip light adapter and i want yhe circuit diagram of it can some one please help me out.

I have an adjustable power supply of 150W.I want to power two peltier modules of 12v/6amps and 12v/3amps and two fans each of 12v/0.72amps. Please suggest me an efficient way to power all devices.

Hello, I wanted to reach out to this wonderful community to seek some guidance regarding an issue I'm facing with the DS26LV32 and DS26LV31 ICs on my board. I believe your collective expertise and experience can help shed some light on this problem. In my current project, I am utilizing the...

Hi I'm having some issues designing a circuit for a project I'm working on. It's a 48v Ebike battery but im including USB C charging so i can charge my phone on the go and i was thinking of including the option of charging the battery pack via USB C in case i dont have the normal charger for...

Hi All, I have two designs using a zener diode for volatge regulation at 24V supply volatge. I like to know which is a better design to go with. Please see attach image. The load device is an active buzzer, that uses 15ma at 4v. Design #1: I have a shunt zener regulator using a resitor that...

Hi all, I'm trying to implement a IEEE1588 Network Synchronizer using SI5389 Clock Synthesizer from Silicon/Skyworks. However, I'm not able to find a reference design for the above and need schematic designs. Would be of great help if you share a design if any to get an understanding of how I...

Hi all, I'm trying to drive a RFP30N06LE N-Channel MOSFET with TC4420 MOSFET Driver. The MOSFET is used to switch a [1W LED][1]. The input to the MOSFET driver is provided by the 5V from an Arduino Nano. But my circuit is not working: it seems that the VDD somehow leaks to the input of the...

Hi everyone, I'm trying to build a solar powered lamp that automatically turns on when it gets dark for my grandfather. He has already purchased a small solar panel connected with micro USB to a light bulb that has to be switched on, but I wanted to automate this by connecting a photo resistive...

Hello everyone. I'm having troubles with my homework. This is the description: The aim of the assignment is to design an asynchronous counter that counts from 0 to 13. Design assumptions: The counters should be asynchronous and implemented with flip-flops and logic circuit gates. • The...

How do we get td1 - td2 = 2ns? I have no IDEA about how to adjust delay cell ,Thanks solving my problem , Thanks a lots

Hello, I'm currently working on an LED bar tachometer using an LM3914, with the alarm flasher functionality being used as a shift light. I followed a circuit diagram from this post (https://forum.allaboutcircuits.com/threads/led-tachometer-lm3914.37656/) about setting the input to be 0-5v...

Hi people :) I would love some help reviewing my little circuit.. I have a stepper motor driver (TB6600) which has an "ENABLE" function. It has an ENA- that is supposed to be connected to the ground, and a ENA+ where you supply the signal for ENABLING or DISABLING the stepper motor connected...

Hello everyone, I need to design a circuit on breadboard that give filtered outputs as "0.5-4 Hz; 4-7 Hz; 7-12 Hz; 12-30 Hz; 30-100 Hz; 100-1000 Hz" using active filter principles with introducing input signal. Can anyone help me? Thanks in advance.

So I recently purchased a 285W western electric transmitter as I'm trying to more or less make a microphone that can plug into a computer which uses a carbon button microphone from the early 20th century. I have little education in circuit design, though I know enough to know I probably made...