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Thanks Sukhbinder,

Can you please let me have the data sheet for this CMOS IC (7555)

Musty

[could anyone please help me to answer some questions]

Hi,
I think it is not very ideal for us to solve your questions just like that for you. Why dont you surf the net for the answers, this will make you learn and understand better.

Whe you are spoon feeded, it's not going to help. However, experience people are in this community to help you when the need arise.

Answers to your question are in digital modulation and transmission. You also need to understand various kind of shift keying like ASK, PSK, FSK, QPSK and so on, these are clue for you, sooooooooooooo, surf the net!

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Thanks a lot Audioguru,
I hope somebody help me on time

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Thanks Audioguru,

I have actually experience the gate problem at 4518 and I understand the necessity for a pulse-stretcher but I dont know how to design for this?

I want your opinion on the trigger pulse synchronisation between 4017 and 4518, it seems there is delay?

Once again, thanks for your responses.

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Thanks Audioguru,

I understand everybit of it except the resetting issue at 4518, what could be the solution? Pls, look through the transmitter?

However, I am already arranging the components for testing

Once again, thank you

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Thanks Audioguru,

So, I can attach the bypass capacitor to pin 8 before Vcc?
I also guess that pin 1 is Ok to be grounded directly.

Have you checked the connections of CD4017, CD4518, and CD4511. Pls, take a closer look at my resetting of the CD4518?

How can I actually utilize mickey mouse AND gate to achieve the resetting?

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Thank you Audioguru, Pls, I still need explanation based on request below


What I am not sure about is the connection of pin 8 to both ground and Vcc, also, the reset pin 4 is not connected.

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Hi Ante, I have tried it on a breadboard but it seems there is no transmission from the transmitter and I can not ascertain the behaviour of the receiver from this.

Hi Audioguru, I absolutely agreed with you on the power supply unit and for the monostable circuit, I made a  mistake with C3, its actually attached to the pin 6 and 7 after R5 before connecting to ground and not on pin 1. Pin 1 is direcly connected to the ground. What I am not sure about is the connection of pin 8 to both ground and Vcc, also, the reset pin 4 is not connected.

I also want your opinion on my timing circuit, that is R5 and C3.

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I have been waiting for your response folks, please, reply

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This is the last part of the circuit diagram

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Hi Folks,

I posted sometimes ago that I needed a circuit for a ‘remote ceiling fan remote control regulator’. Thanks to NURA that gave me an explanation on that but could not draw the circuit, perhaps, due to time constraints. I have been so busy myself, but I had to squeeze time to design these circuits, which is now posted for your criticism.

I prefer 4518 and 4511 to 4026 based on my survey. I have also generated a pulse of 0.11s from the 555 timer IC. I want your advice based on wealth of knowledge on the functionality of this circuit, especially, the value and connection of the active and passive components.

I want your explanation on the Mickey Mouse AND gate operation i.e. the value of the resistor, the two diode values, calculations and principle of operation. Also, I want simulation software. I tried Circuit Maker 2000 but no success.

Please, help me with all ASAP.

Musty

[Ceiling fan remote control regulator]

Hi Nura,

It seems you are very busy lately but we are still waiting for the schematic diagram of the ceiling fan remote control.

PLEASE! PLEASE!! PLEASE!!!

Musty

[Ceiling fan remote control regulator]

Hi Nura,

I guess you've been so busy lately. I and host of others are still waiting for the schematic you promised us  ???

Best regards,

Musty

[Ceiling fan remote control regulator]

Hi, again,

I really enjoy the explanation (BOM) and I am now clear with how to connect to the fan motor coil but i really need the circuit diagram as you've promised.

Tanx


Musty

[Ceiling fan remote control regulator]

Hi Nura,

I have tried my hands on the circuit, but my problem is how to connect to the fan motor coil.

I really appreciate all your efforts via the email.

Best regards,

Musty

[Ceiling fan remote control regulator]

Thanks a lot for your response.

The motor type is the different tapping type. There are four tappings for different speed. It operates on 230v a.c. input.

I hope this helps. Once again, thanks for your response.

Musty

[Ceiling fan remote control regulator]

Hi 2 all,

Please, help me!!!

I really need this circuit.

Thanks in anticipation.

Musty

[Ceiling fan remote control regulator]

Hi 2 u all,

I need somebody to help me with a ceiling fan remote control regulator. The regulator is to regulate from 1 to 5 speed variation. I shall be glad. This community is the only place we have the stuff.

Please, help !!!

Musty

[Design and construction of 3kVA inverter incorporating a 200Ah battery]

Thanks and regards to Audioguru and Ante. I know these principles, all I need to know now is to apply it to the circuit operations.

I will get across to you, if I hanged along the line.

Once again, thanks.

Musty

[Inverter Circuit 12V DC to 230VAC Sine Wave]

Hi audioguru,

You are right, but what I did was to use a hard core copper with battery terminal connected to a special power feed to the breadboard.

Musty

[Inverter Circuit 12V DC to 230VAC Sine Wave]

Hi Audioguru,

I have tried this circuit before, although on a breadboard but I couldnt get the right output, perhaps from my step-up transformer windings. Information regarding this shall be appreciated.

Musty

[Design and construction of 3kVA inverter incorporating a 200Ah battery]

Hi Audioguru,

Thanks a lot, but I really want to understand the principle behind it as well as the sinusoidal output, oscillators and the calculation involved in the output frequency, power and ampere.

Thanks in anticipation.

Musty

[Inverter Circuit 12V DC to 230VAC Sine Wave]

Hi,

You have the circuit already made, you can check on projects (500w inverter by Mustufa Younus).

Have a nice day!!

[Design and construction of 3kVA inverter incorporating a 200Ah battery]

Actually, I know it is going to be very expensive, even, from the battery level but I really want it to help me understand the principle better and moreso, get a much lower mode for myself after understanding it!! 

[Design and construction of 3kVA inverter incorporating a 200Ah battery]

Thanks for the response.

The frequency is 50Hz
Input is expected to be 12v dc
The output is 230v ac (sinusoidal wave)

I am a student, so, I need a circuit cheap to construct and reliable performance.
Please, help me with the schematics and neccessary components calculation and explanation. I know it aint easy.

Musty