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Okay Thanks.But I have checked my oscilloscope and did not find any measurement for 'trapezoidal pattern' does it come under a different name?.Is this a standard measurement on every scope?All I want to do is see the effect of the Ht12e on the amplitude of the carrier wave.
Thanks Mr Rf that now works I have cheked by direct connection between ht12e/d. Now I am using a double balanced mixer (sa60N) to mix the 27 MHZ carrier signal with the signal from HT12E for rf modulation. This is AM Modulation.I have got a 200MHZ digital digital oscilloscope (DSO).Now I want to...
Okay I have now checkd everything and connected as required.
When I connect the encoder and do a direct connection from the encoder output pin to decoder input,
The decoder LEDs A8-A11 light up after about 15 seconds and stay the same way.Now i have also connected an led on the VT pin on...
Sorry, it does not work.
The HT12E i am using 6v regulated dc.I have connected VSS with negative but connected nothing for A0 to A7.For the ROSC resistor I have used 1M ohm resistor. A8 to A11 i connected 12v LEDs to negative.TE is connected to negative.And VDD to +6V as usual.
For the...
Thanks for your help.Maybe I may have created some confusion. Basically I designed a 27 mhz AM modulation transmitter which I intend to use for remote control purposes together with decoder/ encoder HT12E/D.The transmitter works fine so far with vrms of 3v read from an oscilloscope.But i read...
I just want a power supply schematic for normal home indoor or outdoor environment. The transmitter is 27 MHZ, I’m using 9 v DC battery, I don’t know the power of the transmitter, but the vrms at the antenna reads around 3 volts rms. Will the 9 dc do in these environments? The transmitter...
Thanks Misterrf for the help. Before this project I tried to use 600D and 600E ( works similar to HT12E) and I fear i may face the same problem with HT12E/D. The problem is when I connected the 600E and 600D all the LEDS on the decoder lit up even before any signal was received!! What was...
Thanks you all very much for the reply. I want to use HT12E as the encoder and HT12F as the decoder. How do I know that the HT12E would be able to communicate with HT12F ? if they will recognise each other? I am planning to buy these from the same supplier.
Thanks.
HI,
I have designed an AM receiver and transmitter.I need a chip or something else to encode and decode signals. 4 channels would suffice.Can anyone recommend the right chip.I am looking for something simple.
My receiver and transmitter use Amplitude Modulation.
Many thanks in advance.
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