pulse

pulse

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  1. littlespark

    Possible faults with old charge master/ no pulse

    Customer asked me to look at their ev charger, I’ve turned up, but they’re not in. Typical. I’ll come back on my way home later, but wondered if anyone knew how these things work. Customer just said it wasn’t charging the car. No other details. From google, it’s an old original bp pulse aka...
  2. T

    The principle of the pulse source

    I have a question about a pulse source for a mobile phone charger. I read on the Wiki that the power supply is first rectified, then oscillated to a higher frequency, converted to a small transformer and re-rectified and stabilized with feedback towards the multivibrator. I have a question as to...
  3. B

    LED Dimming unbalanced, bulbs flicker and pulse

    Evening guys! I have three of these bulbs on a ceiling light, controlled by a dimmer switch installed by an electrician: https://www.lampandlight.co.uk/e27-led-g95-golden-amber-filament-5w-200lm-1800k-3-step-dimmer Unfortunately there are a number of issues: - For 8/10’ths of the range of...
  4. M

    Electrician Jobs Internet of Things Project Manager : Looking for experienced electricians

    Hello, let me introduce myself before I continue. I work for a startup within the Morgan Sindall group. We work specifically with the Internet of Things, deploying sensors and meters that allow us to measure all kinds of things remotely, and then analyse that data to generate insights. This...
  5. E

    Easy pulse generator

    Hi, I am trying to make a short pulse generator from any pulse input. By this I mean I want a final output with a fixed pulse width no matter what input I have. I tried to do it with a not gate linked to a and gate. It did work but apparently the solution can be based on ONE component only...
  6. S

    Connecting pulse sensor to lower voltage DAQ

    Hello there! Simple question, I have energy meters like those: https://www.zelec.fr/details-compteur+d+energie+monophase+direct+45a-155.html this one is on a french website, but the operation is simple. This one in particular uses an optocoupler 27 Vdc for the pulses, but what is the voltage...
  7. U

    How to tell if a metal halide fitting is pulse or probe start?

    Hi, I recently bought a metal halide fitting but I have no idea how to tell if its a pulse or probe start unit. I have what I believe are both types of bulb and the fitting will start both, would that indicate its a pulse start? With the bulb which I believe is a pulse start bulb (has just a...
  8. Q

    Kick Start and Pulse Start

    Hello, Is Kick Start and Pulse Start the same? I am no Electrician Engineer. The term Kick Start occurs in a motor control manual. Regards.
  9. D

    Bmw Speed sensor pulse wire

    As above, I purchased a front parking sensor kit for my BMW f20 118d 2012. The system requires connection to a speed pulse wire to activate the sensors below a certain speed. Does anyone know what colour wire it is and where is the best place to tap in to it?
  10. T

    Reactor Pulse Transformer

    Can anybody please advise me, we have 4 Transformer Reactors on site, installed inside metal containers, which are very noisy, is there a solution to reduce the noise and are there standard torque settings for the transformer core,
  11. D

    Pulse pir?

    Hi guys, I have been asked to price a job to replace two outside lights which are switched and run in twin and earth. the customer would like to have a pir on these but with an override. Am i right in thinking its a pulse override pir that I need?
  12. P

    Pulse Electrical Solution Introduction

    Hi my is Alan, I cover all aspects of electrical services, security, safety, access, fault finding, testing and certification in domestic, commercial, and industrial properties. My main area of expertise is machine control fault find and repair. Any questions or advice feel free to...
  13. R

    Pulse Width Modulation, does it effect cost of running an electrical product.

    If I use a Pulse Width Modulator on say a fan, will it reduce the cost of running it, if it is slowed down? Not something I'm planning on doing, just wondering!
  14. D

    To pulse or not to pulse?

    Just wondering what advantage 'pulsed' generation meters might have over the non-pulsed ones (every £1 counts :))? My understanding is that the pulsed meters allow monitoring / reporting devices to be retro-fitted to them but is that the only thing? If the pulsed meters were somehow more...
  15. W

    Pulse oximeter using Nellcor DS-A100 sensor

    Hi, I'm working on Pulse oximeter project using Nellcor DS-A100 sensor, I found its pinout on web. But I'm stuck at getting signal out from the sensor at pin 5. I was able to toggle RED and IR leds, but when I connect pin 5 (anode of the phototransistor) of the sensor to Vdd with a 10K pull-up...
  16. D

    pulse coil 2000

    Hi to everyone. I am new to this site and look forward to becoming part of this community! I have a job to take a look at in the next week. Its a 'pulse coil 2000 combi' which heats running water, but then becomes cold very quikly apparently. A plumber has changed the element and has been back...

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