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  1. HarryA1

    Latching circuit board assistance needed

    So you have a double pole single throw switch. There are two sets of contacts in the switch. Two of the connectors connects to one set of contacts and the other pair of connectors connect to the other set of contacts. You need to know which pair of connectors connects to each set of contacts. I...
  2. HarryA1

    Latching circuit board assistance needed

    Do you have a number/ID for the 4 pole switch?
  3. HarryA1

    Advice Please On this amp design

    Using what I could find for similar transistors in the simulator I used your  circuit:   Green trace is the current through the NPN and yellow the PNP. The current through the 8 ohm load looks good inspite of the asymmetry in the transistor currents. Connecting the PNP  between the two...
  4. HarryA1

    OP27G is distorted when the frequency exceeds 4K

    What are you connecting it to? Perhaps the impedance is to low?
  5. HarryA1

    MPCNC Stepper Motors Are Out Of Sync

    see "Simple Way to Fix Out of sync stepper motors" at: https://www.youtube.com/watch?v=U_RiwMSG9rE
  6. HarryA1

    Electronic component market

    Good quality and cheap price do not go together.  I buy cheap from Ebay but not always good. I buy some from Amazon.com because I have prime and can get things quickly. Jameco.com is a good hobbies supplier but they are on the west coast and I am on the east so delivery is slow; also ...
  7. HarryA1

    How to attach Relay or any circuit to make Solar Inverter work as UPS

    I believe what you are looking for is an Automatic Transfer Switch. see: https://en.wikipedia.org/wiki/Transfer_switch see examples at...
  8. HarryA1

    Latching circuit board assistance needed

    The 5 relays on the board are single pole - single  throw.  You wish to expand the number of contacts with you switch? What type are the switches?  You mention schematics? Where does the latching come in?
  9. HarryA1

    Schematic / Datasheet for LY6806 device.

    Looks like you will have will have to draw it out yourself. If you have photoshop or The GIMP you can use the  photographs and lay one (as a transparent layer) over the other; that helps. Else buy a new one: https://www.ebay.com/itm/283527434087?hash=item42038d4f67:g:unQAAOSwh4ZfImWk
  10. HarryA1

    HarryA's modem is down

    I lost my modem  so I am down until this weekend or Monday. I will help answer questions then. I am using the library's wi-fi today.
  11. HarryA1

    I am working with CS5484 for a project and I am unable to configure the IC

    I wonder if you could gleam some useful information from this article; it's for the CS5464. https://corgitronics.com/2014/06/30/using-the-cirrus-logic-cs5464-for-ac-current-measurement/
  12. HarryA1

    I am working with CS5484 for a project and I am unable to configure the IC

    Try https://github.com/stamp/CS5484.git At on clicking  the [code} button see download ZIP I see I am now Rank: Newbie(1/14). Does that mean all my past sins have been forgotten?
  13. HarryA1

    I am working with CS5484 for a project and I am unable to configure the IC

      There is a library file ( GOLANG library for SPI ) here that maybe helpful? https://github.com/stamp/CS5484 I have problems finding the page that has the {code} button to download the file; you may have to dork around with the URL a  bit.
  14. HarryA1

    RS485 4-CH. Controller

    There are a number of sellers on Ebay that have 4 channel modules that ship from China. Most have relay outputs or other types of outputs. Not knowing where in the world you are makes it difficult to help you. The RS-485 is also known as the EIA-TIA 485 or TIA-485. See for example...
  15. HarryA1

    How to edit ones profile?

    How does one edit their Public Profile? I can see it under Profile but not how to change it.
  16. HarryA1

    DC Motor Recommendations

    My Razor Ecosmart scooter uses a 500 watt motor and the Gyroor Warrior off terrain hover board uses a  pair of 350 watt motors for a total of 700 watts. 750 watts equals 1 horsepower. see: https://www.amazon.com/dp/B0779826VN?
  17. HarryA1

    VCO in Radar Transceiver

    You may find some useful information on Wikipedia here: https://en.wikipedia.org/wiki/Voltage-controlled_oscillator I believe it is a trade off between the noise created by high frequency VCOs and that introduced by the multipliers. A low frequency VCO has less noise so using a multiplier to...
  18. HarryA1

    DC Motor Recommendations

    You do not give enough information to enable one to be very helpful to you. What are your requirements for you off road rover? You may look at similar devices (like electric scooters perhaps) via the internet and see what size motors they use.  Here are some 12 volt motors from 1hp to 1/3 hp...
  19. HarryA1

    High voltage divider circuit to run an LED?

    You can use one series resistor. See "Calculating an LED resistor value" at https://www.electronicsclub.info/leds.htm resistor =(supply voltage - LED voltage)/LED current = (62 - 2)/0.020 = 3000 ohms which is a standard resistor value.
  20. HarryA1

    Difference between (EE) and (EEE)

    It depends on the area of specialization. See Penn State ( Pennsylvania, USA) for example. https://www.eecs.psu.edu/students/undergraduate/EECS-Students-Undergrad-EE-Specialization.aspx
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