Search found 2766 matches

by haklesup
Wed Jul 17, 2019 9:38 am
Forum: General Discussion
Topic: Must Move Air at Right Angle
Replies: 3
Views: 112

Re: Must Move Air at Right Angle

In the tightest areas, one solution is to use a heat pipe to move heat to an adjacent area where a large fin and fan assembly can fit. There are many many configurations of CPU coolers many with heat pipes, right angles, pancake and other configurations, it may take some time to parse through an ima...
by haklesup
Mon Jul 15, 2019 2:58 pm
Forum: General Discussion
Topic: What do you call this?
Replies: 12
Views: 233

Re: What do you call this?

I think the 7 types of "USB" cables are actually for USB applications of data and power and doesn't say much about 2.0 or 3.0 speeds. However there are other small connectors used with USB A that are used strictly for charging and may not follow any standard or trend.
by haklesup
Fri Jul 12, 2019 3:27 pm
Forum: General Discussion
Topic: What do you call this?
Replies: 12
Views: 233

Re: What do you call this?

An image search on "USB connector types" yields lots of outline drawings A search on Digikey for USB adapters shows products compatible with 6 different USB plugs (listed in the filter). These usually have drawings and datasheets when you drill down to the product pages. Looks like the types on digi...
by haklesup
Tue Jul 09, 2019 11:11 am
Forum: General Discussion
Topic: The honorable relay vs technology
Replies: 8
Views: 309

Re: The honorable relay vs technology

I understand that the OEM controls are working correctly but in this time is money world, perhaps replacing the controls with one with specs that fit is more cost effective than reverse engineering, designing, procuring, building, testing, installing and hoping (OTOH, I do understand how much fun th...
by haklesup
Mon Jul 08, 2019 5:29 pm
Forum: General Discussion
Topic: The honorable relay vs technology
Replies: 8
Views: 309

Re: The honorable relay vs technology

Here are a couple things to think about Humidity controller you can outright replace the one in the dehumidifier https://www.omega.com/en-us/control-and-monitoring-devices/controllers/humidistats/rhcn-7000-series/p/RHCN-7002 Humidity and temperature controlled power strip: https://www.amazon.com/Ink...
by haklesup
Mon Jul 08, 2019 1:08 pm
Forum: General Discussion
Topic: Need 36v charger or PS.
Replies: 4
Views: 168

Re: Need 36v charger or PS.

Amazon kicked out a lot of fringe sellers, you may find it more reliable now but you are not necessarily going to get better service from Ali or eBay
by haklesup
Mon Jul 08, 2019 1:00 pm
Forum: General Discussion
Topic: The honorable relay vs technology
Replies: 8
Views: 309

Re: The honorable relay vs technology

At least you got it working. You probably could have rigged a 555 timer and a wall wart to press the button soon after power up since the button was probably looking for a rising or falling edge rather than a fixed voltage level. A capacitor coupling interface to the switch may have been enough to d...
by haklesup
Mon Jul 01, 2019 3:08 pm
Forum: General Discussion
Topic: Crazy Phone issues here..
Replies: 16
Views: 1610

Re: Crazy Phone issues here..

They already tear up power wires from street lighting to get the copper for recycling leaving our streets dark for months, don't give them any more ideas. Someday even our cable and FON lines will be obsolete, maybe even for a mature 5G base station solution.
by haklesup
Mon Jul 01, 2019 2:52 pm
Forum: General Discussion
Topic: I found a doohicky thingie
Replies: 6
Views: 609

Re: I found a doohicky thingie

I was thinking about this one. Even if there is a ELM327 core in there, they probably made the Bluetooth access code specific so you can't attach to it anyway. First step is plug it in and see if you phone can detect a new BT signal. When I use mine, I don't need to connect to BT first, the App does...
by haklesup
Mon Jun 24, 2019 12:13 pm
Forum: General Discussion
Topic: Powder coating power supply
Replies: 8
Views: 826

Re: Powder coating power supply

I was reading a description on one of these little black cylinder modules somewhere else. They say they are easy to damage operating under no load. The typical application is an arc generator 1mm to 5mm long but they might work for static charging a conductive object for powder coating, they didn't ...
by haklesup
Thu Jun 20, 2019 12:17 pm
Forum: General Discussion
Topic: Powder coating power supply
Replies: 8
Views: 826

Re: Powder coating power supply

A diode ladder may be easier to construct that a step up transformer and rectify with flyback diode type of HV supply. They usually don't have much current but should be able to put a charge on a smallish object. Screw the electronics, make a van de graff or WIMSHURST generator, should work just as ...
by haklesup
Thu Jun 20, 2019 12:09 pm
Forum: General Discussion
Topic: Crazy Phone issues here..
Replies: 16
Views: 1610

Re: Crazy Phone issues here..

last summer, neighbors Gardner cut a couple twisted pair lines while trimming the tree, still hanging loose today and nobody seems to notice or care. No doubt, unused. I see the lawn posts (those green boxes filled with a tangle of POTS wires) in horrible shape, apparently unmaintained all the time ...
by haklesup
Thu Jun 20, 2019 12:00 pm
Forum: General Discussion
Topic: I found a doohicky thingie
Replies: 6
Views: 609

Re: I found a doohicky thingie

The ODBII dongles can be very useful, The ELM327 module is the most generic form and is widely available works with a multitude of free "Car Scanner" apps in either app store, It just saved me tons of money after the 104F heat really strained my vehicles last week. The insurance company scanners are...
by haklesup
Fri Jun 14, 2019 4:51 pm
Forum: General Discussion
Topic: Advice on power bank voltages/power
Replies: 7
Views: 838

Re: Advice on power bank voltages/power

Parasitic Series resistance, I've seen it toast and once melt a connector body down to a puddle. I recently cleared a fault on one piece of equipment where low voltage on logic 5V caused by connector series resistance dropped it so low (3.4V), the PC couldn't communicate with it. Yes, anything highe...
by haklesup
Fri Jun 14, 2019 12:11 pm
Forum: General Discussion
Topic: Mini amp circuit
Replies: 147
Views: 207515

Re: Mini amp circuit

scoping those nodes, you are really looking at the current flowing through the base bias resistors, Since the PN junction (B-E) of the NPN transistor and the NP junction (B-E also) of the PNP are non linear, the current flow into the bases is non linear (due to the diode characteristic of the B-E ju...