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Search: Posts Made By: sam_sam_sam
Forum: General Electronics Technical Discussion 07-14-2019, 09:04 PM
Replies: 6
Views: 83
Posted By sam_sam_sam
Re: Step-Down Buck Charging Board XL4015 ADJ Lithium Battery Charger Converter Module

What is the difference between them please give an example

Thanks
Forum: General Electronics Technical Discussion 07-14-2019, 08:43 PM
Replies: 6
Views: 83
Posted By sam_sam_sam
Re: Step-Down Buck Charging Board XL4015 ADJ Lithium Battery Charger Converter Module

Here is a question that I have as you know that I have been working with the Ksger battery BMS protection board so I have battery protection board part

Will this unit control the current because...
Forum: General Electronics Technical Discussion 07-14-2019, 07:32 PM
Replies: 6
Views: 83
Posted By sam_sam_sam
Step-Down Buck Charging Board XL4015 ADJ Lithium Battery Charger Converter Module

Will these units really do five amps

http://s.aliexpress.com/yUjqq6Rz

5A Max Step-Down Buck Charging Board XL4015 ADJ Lithium Battery Charger Converter Module DC-DC 0.8-30V To 5-32V 5A Step...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2019, 05:43 PM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

Now I have found a way to use the secondary side of this power supply based on this reply



I did have to add more resistance to LED lights circuit so the LED lights would not burn up
It only...
Forum: General Electronics Technical Discussion 07-14-2019, 02:47 PM
Replies: 3
Views: 89
Posted By sam_sam_sam
Re: USB Voltage and Current Tester Capacity What do you think about this

Thanks for sharing this link

I decided to buy this one instead

http://s.aliexpress.com/V3eeIfQF

The UM25C and the LD35

I bought the bundle that cost $31.69
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2019, 09:06 AM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

I did run a test on this battery charger controller

On a scale of ONE board does not work at all TEN board works perfectly

I give it a 2.5 and this might be too high of a rating

Here is...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-14-2019, 08:28 AM
Replies: 22
Views: 449
Posted By sam_sam_sam
Re: KSGER Battery BMS charge battery board review

Here are the test results for this BMS protection board for the Ksger battery powered soldering iron controller

If you charge and discharge the batteries and use batteries that have the same...
Forum: General Electronics Technical Discussion 07-14-2019, 06:52 AM
Replies: 3
Views: 89
Posted By sam_sam_sam
USB Voltage and Current Tester Capacity What do you think about this

Here is something that I would like to know if anyone has one and what they think of it

JC 100MHZ T50N Dual USB Voltage and Current Tester Capacity table with USB Current Test Cable
...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-13-2019, 05:54 PM
Replies: 22
Views: 449
Posted By sam_sam_sam
Re: KSGER Battery BMS charge battery board review

Here is the soldering iron controller with the batteries in and power supply jack all in one case

Yes there is a meter hooked up to the power jack I checking the battery charger that I bought for...
Forum: General Electronics Technical Discussion 07-11-2019, 06:42 PM
Replies: 42
Views: 595
Posted By sam_sam_sam
Re: Running a microcontroller in car - power supply aspects

Yes it suppose to go that way so you clamp the reverse voltage off of a coil or a motor a very common thing to when you want to have a pin from a micro controller to control a outside device to use a...
Forum: General Electronics Technical Discussion 07-10-2019, 03:58 AM
Replies: 16
Views: 374
Posted By sam_sam_sam
Re: Variac 20 amp advice?

You are probably right about this however there is not really a lot of trace to work with if you are putting wires to the board

I did cut a deep slot in board on both sides
Forum: General Electronics Technical Discussion 07-09-2019, 04:01 AM
Replies: 16
Views: 374
Posted By sam_sam_sam
Re: Variac 20 amp advice?

One note about this modification is that you have to cut the trace on both sides of board in the same position which I forgot to mention
Forum: Troubleshooting Power Supplies and Power Supply Design 07-08-2019, 03:52 AM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

You have the right part number the second digit was the one that I could not really make out for sure what it is
Forum: Troubleshooting Power Supplies and Power Supply Design 07-08-2019, 03:46 AM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

It has 4.2 X 6 elements = 25.2 volts —> before the BMS protection board ends the charging cycle which is really 4.1 X 6 elements = 24.6 volts
Forum: Troubleshooting Power Supplies and Power Supply Design 07-07-2019, 09:15 PM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

One note

I would be charging these batteries with a BMS protection board
Forum: Troubleshooting Power Supplies and Power Supply Design 07-07-2019, 06:25 PM
Replies: 11
Views: 213
Posted By sam_sam_sam
Re: Smart Charger 29 volts @ 1 amp how do I change it 25 volts

Thank you for finding the data sheet for me it very hard to read the part number on the ic chip

This is helps a lot at
I now understand how this switching power supply is suppose to work
...
Forum: General Electronics Technical Discussion 07-07-2019, 11:32 AM
Replies: 16
Views: 374
Posted By sam_sam_sam
Re: Variac 20 amp advice?

Here is the modification on this meter module that I was talking about

In the photo I show where I cut the trace so it can measure down to ( 0 ) volts

I replaced the only capacitor that is in...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-07-2019, 09:25 AM
Replies: 11
Views: 213
Posted By sam_sam_sam
Smart Charger 29 volts @ 1 amp how do I change it 25 volts

I bought these chargers to charge 24 volt li-ion battery packs I could not find one that would be at 25 volts and the close I could come up with is this

What resistors would I have to change to...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-05-2019, 04:24 PM
Replies: 31
Views: 762
Posted By sam_sam_sam
Re: Cordless Soldering Iron - recommendations?

Here is a photo of the other version of this soldering iron controller

This works a little bit different I have figured out how to go into the menu and set the sleep and shut down timers for how...
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-05-2019, 03:51 PM
Replies: 14
Views: 171
Posted By sam_sam_sam
Re: Please Help! Component ID needed

Good job repairing it
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-04-2019, 07:56 AM
Replies: 14
Views: 171
Posted By sam_sam_sam
Re: Please Help! Component ID needed

You must unsolder it from the board first before you start the following—>

Just take it apart carefully and you might be able to fix it
Just take your time when do it that you do not break the...
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-04-2019, 02:10 AM
Replies: 14
Views: 171
Posted By sam_sam_sam
Re: Please Help! Component ID needed

To me it looks like some type of inductor
Forum: Troubleshooting Game Consoles & Other Weird Devices 07-04-2019, 01:45 AM
Replies: 39
Views: 449
Posted By sam_sam_sam
Re: Harbor Freight Tools Heat Gun Item 96289 JSRF-601C Repair

If the heat sink that used is to big you could always use a T-220 package heat sink something like this
...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 07-03-2019, 04:25 AM
Replies: 18
Views: 492
Posted By sam_sam_sam
Re: KSGER STM32 T12 soldering stations

When I remove that connector I use my Desoldiering Gun (ZD-917 ) and a temperature hot air gun and with this setup it still took some doing

But if you have a hot air gun put a very small nose...
Forum: General Electronics Technical Discussion 07-02-2019, 08:46 AM
Replies: 16
Views: 374
Posted By sam_sam_sam
Re: Variac 20 amp advice?

I did not want to wait a month to get it

I want to have this device working for a project that I want start working on

I am going to buy some of these meters that you gave me the link to next...
Showing results 1 to 25 of 500

 
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