Search found 8 matches

by Deion Adel
Wed Jan 12, 2022 9:49 pm
Forum: General Discussion
Topic: hobby servo motors
Replies: 1
Views: 1789

hobby servo motors

Hello, I'm looking at those common Tower Pro micro servos. SG90, for example. On stepper motor controllers, you can turn off the stepper when you're done with the movement, this lowers wasted power since the stepper coils can de-energize. That does not appear to be possible with servo motors - if th...
by Deion Adel
Tue Nov 30, 2021 10:05 pm
Forum: General Discussion
Topic: How to calculate total resistance of a parallel circuit
Replies: 3
Views: 6799

How to calculate total resistance of a parallel circuit

Can anyone help me, please. I've got to find the total resistance of a parallel circuit. There are three given resistors (no given voltage, current, and power, it's only 3 resistors) and the third resistor is initiated into infinite. How can I solve the total resistance when there is an infinite giv...
by Deion Adel
Sun Nov 07, 2021 7:30 pm
Forum: General Discussion
Topic: 74hc595 noise problem ?
Replies: 2
Views: 2144

74hc595 noise problem ?

Hi in our project we connecting 25 , 74hc595 to each other and shifting data on them but suddenly we have some undesired result with the output of the 74hc595 i want to know what kind of noise consideration should i take into account for connecting these numers of 74hc595 to each other ? 74hc595 dat...
by Deion Adel
Wed Oct 20, 2021 8:04 pm
Forum: General Discussion
Topic: LM358 differential voltage and amplifier circuit
Replies: 5
Views: 2781

LM358 differential voltage and amplifier circuit

I designed a circuit that's rather common: https://i.stack.imgur.com/OS8W1.png I designed a circuit that's rather common: schematic simulate this circuit – Schematic created using CircuitLab And I have a problem. I have got few LM358s, (LM358 datasheet) some from ST, some from other companies. (I te...
by Deion Adel
Fri Sep 17, 2021 8:41 pm
Forum: General Discussion
Topic: MCP2551 Circuit Problem in automotive
Replies: 3
Views: 3295

MCP2551 Circuit Problem in automotive

I have an automotive problem. I installed two nodes in a industrial vehicle using MCP2515 controller and MCP2551 transceiver. I used CAN libraries for MCC18 and software is working fine. The problem is in hardware. After the application have been working for some days, the MCP2551( MCP2551 Datasheet...
by Deion Adel
Tue Sep 07, 2021 3:08 am
Forum: General Discussion
Topic: 555 Timer problems in a circuit
Replies: 1
Views: 1801

555 Timer problems in a circuit

Hello, all The c is a commonly used IC designed to produce a variety of output waveforms with the addition of an external RC network For this little circuit, I'm using an Oscillator (parameter source: https://www.apogeeweb.net/circuitry/ne555p-pinout-datasheet-features-applications.html. Everything ...
by Deion Adel
Thu Aug 19, 2021 1:47 am
Forum: General Discussion
Topic: Do i need to buy a ballast resistor ?
Replies: 6
Views: 3200

Do i need to buy a ballast resistor ?

Need help! The led lights on my headlight begin to flicker after I replace the headlight. My friends told me that I need a resistor as the voltage in an led circuits beyond. I checked that theballast resistor has the function of limiting the voltage? Do I need to purchase it? Please share your idea.
by Deion Adel
Fri Aug 13, 2021 1:25 am
Forum: General Discussion
Topic: Help to find Battery
Replies: 12
Views: 11355

Re: Help to find Battery

The battery has a letter near the positive pole to indicate the battery size. The comparison is as follows: No. 1 battery is D, No. 2 battery is C, No. 3 battery is A, No. 5 battery is AA, and No. 7 battery is AAA.