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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hello all,
I am working on a circuit and have come up against. It is a kind of version of the Hulda Clark Zapper, using a 9V battery to produce around a 30kHz PWM signal... I want to detect with my PIC12F1571 microcontroller when the zapper output is connected to a person and when it is not...
All modes of SGL8022W are toggle mode, ie every time you need a touch to switch off or on.
Is there a way to make it into a momentary switch, where default is off and on touch it fades in and it fades out when touch is removed?
I am working on a project where I have to pulse a laser against a spinning, six sided polygon mirror motor.
https://www.precisionroller.com/motors-for-sharp-mx-3640n/products.html
(worth noting that i have them from china)
I am pulsing at the motor frequency x6 to get a single laser dot...
EPS Bench setup we are thinking about: Torque Angle Sensor (TAS) will be emulated by PIC microcontroller. Emulated TAS will be connected to EPS ECU's Single Edge Nibble Transmission (SENT) bus.
Our strategy in getting started with EPS Bench testing: Use PIC microcontroller to apply...
Please help me, I got problem.
From circuit diagram
Target : I want to make square wave on Vout (Period =18 sec on :8 sec off: 10 sec)
I have problem when I use scope to measure triangle and Vout , I have followed target. But when I use scope to measure Vout only, time Period and time on reduce...
Hi Guys,
I have some concerns regarding the Raspberry Pi 3 & a BLDC. Its a continuous rotation 12V BLDC (https://www.surplussales.com/Motors/pdf/mot-000-0222.pdf).
I have a nameless/label-less ESC in my assortment of electronics. It is setup like any old ESC with 2 wires for the battery, 3...
Hello
(First time poster with rusty familiarity with vaccuum tube audio amplifiers)
I am working with a Siemens 1212C PLC and looking to power a Burkert proportional solenoid via the PLC HSC outputs. Smaller solenoids have been successfully powered this way, but I need a bigger orifice size...
I have a flight instrument with several + 0 - meters with no inputs they are read 0. But they can be made to move by using the diode test on my Fluke.
I know I can use PWM to drive in only one direction at a time. so some times the wires need to be connected:
for + 1 pwm 2 ground
for - 2 pwm 1...
Hi guys!
I recently bought a "Clicker 2 mikro bus" from Mikroelektronika. This comes with a 16-bit PIC24FJ1024GB610 microcontroller:
https://download.mikroe.com/documents/starter-boards/clicker-2/pic24/clicker-2-for-pic24-manual-v100.pdf
I'm able to communicate and load .HEX files in it. I...
Hello Friends
I've a question about using Atmega8a for fast mode PWM using TCNT1 (16 bit) and hope to answer me with my thanks in advance
I want to set Fast PWM to use TCNT1, OCR1A to hold the comparing value of the counter and use OC1A as an output, I know how to setup the configuration that...
Hello,
Background:
Large POE switch (24 ports) that I would like to utilise for home use. These units are normally stored in a server room so noise is not really an issue, for me however, it is. The plan was to replace the existing 3 x 40mm fans with 2 x 120mm fans using my own fan controller...
hello
im looking for a circuit that can remove access power from a battery, but i can not find it anywhere.
im not that competent in designing circuits so i wil try in forum.
maybe someone have a circuit that i can use.
i did not ask about safety, i did not ask about other ways of doing this...
Hi everyone,
I am trying to understand and implement FOC algorithm in MATLAB for a PMSM. I understand we are converting the 3 phase stator currents into 2 time-invariant stator currents: (direct and quadrature currents or Id and Iq, respectively). But I do not unsderstand how PWM is applied...
Hi Guys,
I have a college project where I need to controll a motor (27V / 3 A), I used a H Bridge l298n in parallel to support the current, It worked for while and then stop but I don't know what was wrong. Does any body know anthing that could help me?
The motor is a Maxon 118752 precision...
Hi. I need a little help from experienced people.
I want to control a Peltier element with a microcontroller, with PWM. May? The peltier element has the following parameters: Imax=8.5 A, Vmax=15.4V.Ok... I have a 12 volt source,17A for example.
How can i design the circuit so that i can...
The main specification consists in the resolution of a technical problem by the use of electronic systems
It is proposed to design an Adaptive flashlight so that the light intensity depends on the brightness environmental. When there is a lot of ambient light the flashlight is off and according...
I am trying to create a simple half bridge inverter in LTSpice. I have chosen to use a purely inductive load and I am having some problems with the circuit.
I am using a gate driver the IR2110a to drive the MOSFETS.
The problems I am having are the output voltage (Vs-Va) is not as expected. I...
Good afternoon, I have little knowledge in electronics but I'm posting on behalf of my teammate.
We have been given the task to design and build an electric wheelchair to satisfy a brief for a competition we are in. We have to build everything from scratch in a limited time window so everything...
I am coding on pIC16F886 IC. I am trying to generate Fire alarm siren with PWMsignal . I have few questions as below. I copied code from **broken link removed** My spaker circuit look like this video , I am sending PWM pulses instead of audio Input mosfet circuit
I could able to produce based...
Hi,
I work as inverter and dc / dc designer, but I'm new in three-phase motors' subject.
I should make a project sketched in the figure.
the characteristics of the motors are in the picture.
I say the pilot will be in open loop.
how are the discrete components (MOS or igbt) dimensioned in...
Hi All:
I spent a few hours tweaking this using common parts to about 90% efficiency.
It can do more power out with a > 36V supply. No AM modulation , yet.
OK, it has been few months now since i installed my solar system. It is a small one but i want to extract every ounce of juice i could get from my solar pv's. I am already aware that the mppt charge controller can do it's wonders. Currently using a pwm one and the only i time i get full...
Hello,
I have already completed a project that uses relays and a 120v circuit to open/close a set of TV monitors for my church. It's a very simple reversing circuit via the relays means a switch is turned "ON" to open the monitors and "OFF" closes them.
(the 120v system was necessary because of...
Hi everyone.
My project requires to send PWM signal to the MOSFET. I am using 6N137 Optocoupler. The output of this is inverted signal. One way is to use an inverting IC at the output of PWM pin of micrcontroller PIC18F4550. This got me thinking is there a way I can send inverted PWM signal to...
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