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inductive dimmer circuit
1)You didn´t tell us the main voltage (220 or 110V) you are using.
2)BT136 is the generic name of the TRIAC but it should have a capitol letter following this number.
This letter has a direct correspondence with the repetitive peak off-state voltage.
BT136A, BT136B...
I can post a small code for you, but I don´t know your hardware.
Since both are internal PIC operations, you will need a way to watch them, like an
LCD or an external monitor.
Tell me what hardware do you have and I will send you the full code.
Humber555
If you connect a resistor between the base and the emitter of a phototransistor,
you are lowering the BE impedance, hence doing the transistor less sensitive to
the light incidence. In some cases this is a common practice to decrease the gain.
humber555
Hi glenjoy,
1)
You didn't post the full header, it is important to see how do you define some pre-processor directives.
We doesn´t know wich microcontroller, oscillator type and Configuration Word are you using.
2)
#byte A_PORT=0x05
#byte B_PORT=0x06
Are Ok. Using #byte a C variable is...
That´s the point. For goverments and most companies, if they can´t get an economic profit
in such project, they will discard it. Unfortunately, nobody will install such system to take care of
poor people, instead if there were a military base, a petroleum plant or another installation they...
What do you mean with RS485 with 25 volts ? I don´t understand why do you use this
voltage level, it´s out of the expected value using standard RS485 tranceivers.
For a real RS485, those glitches aren´t a big problem because they canceal them.
Could you pls explain us what the reason to use 25...
rs485 picbasic
YES. My comments concern to the electrical drawing example. It use the SN75176
tranceivers to drive the RS485 line but in a strange configuration. I´m sure they
will NOT work properly in such way, I mean from the noise rejection point of view,
because it break the most...
Hi albert22,
I assume that you have at least a clue of the whole packet you are trying to decode.
I mean, you need to know the headers or the sync characters that usually
is the "preamble" wich is sent prior to the "Data Field" to wake-up the remote receiver.
You need to know if the first...
Hi albert22,
To decode Manchester or any Bi-phase Code, as they self-carry the clock pulses
to sinchronize with, the very first task is to recover the clock to get the reference.
The codes are encoded as a signal with two frequencies, Fclock and 2xFclock.
A positive or negative pulse with...
hi tech c buffer
Hi ericmar,
Bit-banging soft handler to receive a long data string is not the best way to start with
if your final target is to receive the full GPS packet. I strongly recommend to use
the hardware UART of the 16F877, AND a circular buffer.
best wishes,
humber555
c compiler hi-tech example
Hi ericmar,
It seems that you are loosing a char after you receive one because some overhead during
getchar(). Post the routine you are using to enable us to help you. You can get running the
PIC16F877 @4Mhz at 9600 Baud but you must be carefull regarding the...
Hi garg29,
There are dedicated IC that does what you need, this technique named
brown-out detector is widely used.
This is one of them, specifically for the C51 family.
http://www.atmel.com/dyn/resources/prod_documents/doc4183.pdf
HTH, :)
humber555
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