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Type: Posts; User: ZASto

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by ZASto
Replies
3
Views
121

### Closed: Re: Replacement for AD848JR

Dikey has 0 pieces in stock.
2. ## Thread: Runtime of clock using alkaline D cells instead of AA batteries

by ZASto
Replies
11
Views
208

### Closed: Re: Runtime of clock using alkaline D cells instead of AA batteries

15000mAh / 2400mAh = 6.25
60days * 6.25 = 375days

How this compute :D

by ZASto
Replies
3
Views
366

On the first link that I posted, you have the BE marking in SOT-89
4. ## Thread: How can I tell if my laptop screen is LED or LCD?

by ZASto
Replies
5
Views
247

### Closed: Re: How can I tell if my laptop screen is LED or LCD?

Of course, Klaus, but with a price tag the OP's question would be irelevant :smile:
5. ## Thread: How can I tell if my laptop screen is LED or LCD?

by ZASto
Replies
5
Views
247

### Closed: Re: How can I tell if my laptop screen is LED or LCD?

Your laptop has LCD panel (as every laptop has).
Difference is only in backlighting. It can be LED or CCFL.
In last couple of years, all laptop panels are with LED lighting.

by ZASto
Replies
3
Views
366

And you do nit like to use google or some other search engine.
In your post is missing info about the circuit that the component is in, a photo from a different angle that the number of leads could...
7. ## Thread: Shunt in DC ammeter circuit

by ZASto
Replies
7
Views
362

### Closed: Re: Shunt in DC ammeter circuit

Did you connect it this way?

155422

8. ## Thread: PT100 interfacing with controller

by ZASto
Replies
7
Views
448

### Closed: Re: PT100 interfacing with controller

Thermocouples are generating voltage, Pt-100 is temperature dependent resistor!
Apples and Oranges.
9. ## Thread: PT100 interfacing with controller

by ZASto
Replies
7
Views
448

### Closed: Re: PT100 interfacing with controller

220 Ohm is approx. 315 degrees C.
You should try different approach for measuring with Pt-100. Connect it to 1mA constant current source and then measure/amplify voltage that dropped on Pt-100.
I...

by ZASto
Replies
3
Views
376

### Closed: Re: Reading Analog value Rasberry pi

MCP4725 is Digital-to-Analog Converter not ADC
It generates voltage dependent on digital value that it receives through I2C.

by ZASto
Replies
3
Views
543

12. ## Thread: Extend life of UV lamp.

by ZASto
Replies
4
Views
285

### Closed: Re: Extend life of UV lamp.

Mercury vapour produces UV wavelength of 273nm (UV-C)
That part of UV spectrum gets totally absorbed in atmosphere. Mainly used to be used for UV-EPROM erasing, still used for desinfection in bio...
13. ## Thread: How does one learn to read a schematic? (Marshall tube guitar amp)

by ZASto
Replies
12
Views
2,242

### Closed: Re: How does one learn to read a schematic? (Marshall tube guitar amp)

You should search datasheets for the tubes :-)
155199
155198

What are markings on V4..V7?
14. ## Thread: HX711 mV/V information needed

by ZASto
Replies
45
Views
2,380

### Closed: Re: HX711 mV/V information needed

If a sensor is declared to 200% overload, 300+% will produce plastic deformation to the sensor and it will be rendered useless. Mechanical construction does not figure anymore.

As per Klaus...
15. ## Thread: Can someone help me to find out what an unknown PCB is?

by ZASto
Replies
3
Views
318

### Closed: Re: Can someone help me to find out what an unknown PCB is?

Welllll... you should use some medicine for your memory :-) :-D
I usually remember what some of PCB's are for, BTW I design them myself, even after years laying in the drawer.
16. ## Thread: circuit design help analog to Potentiometer

by ZASto
Replies
11
Views
659

### Closed: Re: circuit design help analog to Potentiometer

What is the model of that Lincoln welder?
17. ## Thread: Sine PWM calculated with pic, instead of using table

by ZASto
Replies
22
Views
1,243

### Closed: Re: Sine PWM calculated with pic, instead of using table

In PICBasic and Proton Basic, HPWM is related to hardware PWM module in PIC micro, which directly sets registers of PWM module, leaving micro to do other work.

by ZASto
Replies
8
Views
766

19. ## Thread: I cannot power that pelletier module

by ZASto
Replies
9
Views
618

### Closed: Re: I cannot power that pelletier module

Watch this channel on YT, you will find lot of interresting things about peltiers.
20. ## Thread: To develop 3D printer in PIC controller

by ZASto
Replies
8
Views
453

### Closed: Re: To develop 3D printer in PIC controller

On Github, you can find source for Marlin, GRBL, if you search a bit more, you can find source for GRBL (6 axes) running on STM32F1xxx, aka. Blue Pill
"Small" micro is not just a dumb slave (sorry...
21. ## Thread: To develop 3D printer in PIC controller

by ZASto
Replies
8
Views
453

### Closed: Re: To develop 3D printer in PIC controller

First of all, you have to figure out what is the difference between microcontroller (AtMEGA, PIC) and microprocessor (ARM, Intel, AMD).
Second, Marlin firmware or GRBL firmware are ment to be motion...

by ZASto
Replies
6
Views
1,161

23. ## Thread: Do I need footprint if I will just simulate in protues?

by ZASto
Replies
3
Views
460

### [SOLVED] Re: Do I need footprint if I will just simulate in protues?

Free, multiplatform, quite capable for production work.
24. ## Thread: Car battery STARTER voltage help (not charger) using variety of methods (possibly AC)

by ZASto
Replies
21
Views
1,319

### Closed: Re: Car battery STARTER voltage help (not charger) using variety of methods (possibly

18Ah battery is inadequate for cranking truck engines. Due to internal resistance and ion buildup during high amp surge when internal resistance rises even more, the voltage drop on the battery cells...
25. ## Thread: Car battery STARTER voltage help (not charger) using variety of methods (possibly AC)

by ZASto
Replies
21
Views
1,319

### Closed: Re: Car battery STARTER voltage help (not charger) using variety of methods (possibly

One thing that no one took in consideration is that a small battery cannot deliver high currents for starting cold "high performance" engine. By quoted I mean the gas guzzlers that could be found in...
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