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Source level of the charger should never drop. This happens only when charger requirements doesn't match that of the load. Modern chargers should have sensing circuit to source the current based on the battery needs. As FvM mentioned, charger must always be a constant current/voltage source. Any...
That is fair, agree with your application requirement view... have seen processors/uCs vendors suggesting a required ppm rating for their respective clocking scheme irrespective of application but still i don't see it specified with pic micro controllers.. ppm always give me a data of how much...
I was going through datasheet of pic micro-controller (PIC32MX795F512L) ans was wondering what the requirement of ppm for main clock (main clock i meant because there is also RTC crystal) was?? :bang:
I have gone through few pic micro datasheets and found that none of them mention the ppm...
It is a common scenario when a capacitor is stressed beyond it's limits, it may go bad.. Go bad in the sense, it may burst or bulge as in your case.. If the capacitors you are mentioning are in the path of amplifier supply, there is a definite chance that they might have gone bad. As you...
Re: Fingerprint modules in the market
Hey.... Thanks Reginald
These are just offers from sites like eBay. I can purchase them now but if i want to use them in future i may have to shell more money to get the same module.
Mostly, i am looking for genuine vendors who give at that price and can...
Hi guys,
This might be a genuine question for discussion.
I am working on a project which demanded use of Fingerprint sensor. Over the years fingerprint modules have evolved and now we use the new range of Capacitive fingerprint sensors dominating optical sensors. we see those fingerprint chip...
It will be a BJT.. but the connectivity i guess is wrong.
The resistor and LED must be connected to emitter terminal.
Battery must be connected to base terminal.
the terminal of the BJT under Q1 and R12 silk-screen must be emitter and not base.
on the point... this was what i was looking for on the high level.. My guess too is that it may work but not as per the desiredspecifications.
Actually, speed is not a concern for me. I am basically toglling GPIO and that too at a very low rate. this GPIO is gated. So, a point came up whether...
Any of the these cases might be happening.
1. As suggested in the datasheet, a parallel feedback resistor is required which is not connected.
2. The PLL settings not set properly inside (prescalar)
3. Sometimes, your configuration in the code may be enabling internal oscillator, so, may be you...
Completely agree with your views. My doubt has been regarding the device operating below the rated voltage. and that NAND gate internally are FETs. So, operating below specified voltage shouldn't be a problem. I am looking for a clear reason for not able to do it.
I am looking at only...
I had one basic question, which has been bothering me for sometime.
I have a logic gate, in which recommended VCC is min. 4V and max. 5V. I want to keep aside the input logic levels for sometime and wanted to know if i can operate the same logic gate at 3V and get my desired results. Let us...
Using PIC18F series of microcontrollers. Also, using ICD debugger for programming.
Talking about on-board programming.
Have seen the pic kit user guide and ICD also, in those PGM itself is not connected.. So, does this need to be controlled manually? or any other option? Can we put PGM in...
I am working on PIC microcontrollers. They have this LVP and HVP programming options.
For LVP, it seems the PGM pin must be pulled high and for HVP, PGM must be pulled LOW. Another criteria is MCLR must be pulled high for HVP.
It seems by default the PIC will be in LVP mode.
Actually, i have...
Yes, i agree with you at the instant of step input.. But he is asking when there is some current flow through R1. In that case definitely the voltage across cap is not zero.
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