Search found 8 matches
- Wed Jan 12, 2022 9:49 pm
- Forum: General Discussion
- Topic: hobby servo motors
- Replies: 1
- Views: 2033
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...
- Tue Nov 30, 2021 10:05 pm
- Forum: General Discussion
- Topic: How to calculate total resistance of a parallel circuit
- Replies: 3
- Views: 7549
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...
- Sun Nov 07, 2021 7:30 pm
- Forum: General Discussion
- Topic: 74hc595 noise problem ?
- Replies: 2
- Views: 2270
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...
- Wed Oct 20, 2021 8:04 pm
- Forum: General Discussion
- Topic: LM358 differential voltage and amplifier circuit
- Replies: 5
- Views: 3234
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...
- Fri Sep 17, 2021 8:41 pm
- Forum: General Discussion
- Topic: MCP2551 Circuit Problem in automotive
- Replies: 3
- Views: 3845
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...
- Tue Sep 07, 2021 3:08 am
- Forum: General Discussion
- Topic: 555 Timer problems in a circuit
- Replies: 1
- Views: 2151
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 ...
- Thu Aug 19, 2021 1:47 am
- Forum: General Discussion
- Topic: Do i need to buy a ballast resistor ?
- Replies: 6
- Views: 3566
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.
- Fri Aug 13, 2021 1:25 am
- Forum: General Discussion
- Topic: Help to find Battery
- Replies: 12
- Views: 11909
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.