unknown component/ circuit

[chinsoon]

hello there,

i have seen the circuit in this site and i am quite happy to have found this circuit..

https://www.electronic-circuits-diagrams.com/remotecontrolsimages/remotecontrolsckt1.shtml

however, i do not know what does this VG40T and VG40R mean? is it suppose to be a chip? or the wireless module?

can someone explain what they are, and if you have any better suggestion, please get back to me as well.

thanks in advance.

 

[Papabravo]

If we could see what you see we might be able to help. Short of that we're at sea!

 

[chinsoon]

sorry

**broken link removed**

sorry... forgot to include the link as well

haha

thanks

 

[philba]

it's some sort of 300 mhz tx/rx pair. they look pretty easy to use but a bit of googling turned up nothing. It'd use one of those cheap tx/rx pairs and encoder/decoder chips like from holtek.

by the way, the link doesn't work.

 

[chinsoon]

..

so is there any circuit that you can suggest.. because i am very blur about that part of the circuit... is thee any links available that you know?

 

[audioguru]

How can we suggest parts that are available on the other side of the world?
The circuit you showed is from over there somewhere and is very, very old so many of its parts are not made anymore.
Lookup Holtek radio pairs in Google.

 

[philba]

I'm sure that small radio tx/rx pairs are available in malaysia. for example abacom makes lots of units **broken link removed** but there are a number of similar ones.

Holtek makes encoders/decoders. Though this company is in the USA and re-lable the datasheets, all their products are made in the far east. https://www.rentron.com/PicBasic/RemoteControl.htm there are lots of schematics on that site. I'd be surpised if you couldn't find something in your area.