Hello, I have a circuit that will need to return connected hardware to a default state if power is lost. The hardware can handle continuous voltage, so I’m thinking a simple solution would be to use a battery to provide that fallback power source. To avoid draining the battery, I’d like to connect it through a relay on the...
I’m curious and am playing around with a new EDA tool and am looking at practicing by designing a PCB which should be roughly 28x26mm footprint (give or take a few mm…)....
Sixfab uses the Telit ME910C1-WW chip on some of their USB models and the Quectel EC25-A for others. They are available as M2 form factor inserts, or you can buy just the chip.
Thank you, I will reflow C4 and add C16, but C10 and C14 look fine from the sides.
The messy/missing joints near C17, C19, and C20 are optional components for the other side. (Unused surface mount USB port with through-hole mounting pins and an unused jumper.) Right-hand jumpers are all optional and unused from an earlier prototyping stage.
What do you mean by extra traces by the IC? And you’re absolutely right about the small IC. It’s the MAX17640, and at 2mm x 2mm it’s a piece of work to land correctly.
Continuous operation of a general purpose relay?
Hello, I have a circuit that will need to return connected hardware to a default state if power is lost. The hardware can handle continuous voltage, so I’m thinking a simple solution would be to use a battery to provide that fallback power source. To avoid draining the battery, I’d like to connect it through a relay on the...
Possible LTE cat 4 modem chips
I’m curious and am playing around with a new EDA tool and am looking at practicing by designing a PCB which should be roughly 28x26mm footprint (give or take a few mm…)....
Strange board behavior when switching power supplies (photos.app.goo.gl)
This photo shows the power conversion side of two versions of the same board. Input is up to 60V DC, board converts to 5V and then down to 3.3V....
Extra Long Pin 2x2 header
I’m looking for a version of this connector (2x2, 2.54mm):...