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I know i need a TDMA or something similar.
Which is, in your opinion, the simplest solution? a simple working algorithm for this job. how could work a simple TDMA on PIC?
Hi
I'm programming a remote relay controller using PIC.
Pic sends serial (rs232) data trough wireless 433MHZ or 868MHZ.
Transmitter sends some code bytes and receiver gets on serial receiver and decode those bytes.
I use a lot of different codes so that receiver can only be swithced on by...
HI,
I've got a problem. Sometimes L5970, used in stepdown config 12V output, break down. My device could be powered by 12V or 24V. Sometimes when i power up my device, L5970 dreak and it stops regulating output voltage.My output voltage in those cases is the same as input voltage. I happened...
replacement speaker mylar 50 ohm resistor
HI,
I'm repairing an electronic device, it has a loudspeaker to change.
It seems a Mylar speaker. 50mm diameter. there is write on it: 0.2W 50F 50 OHM
I found on catalogues similar speaker with same power but i can only find max 22 OHM.
Can I use...
nguyennam, my circuit is intended to power up some hydaulic valves.
instead of using relays as old circuit i decided to use a solid state device. I choose IPS series. My device is powered by 12V or 24V battery. With 12V non problems.
Bevice has got 1 IPS6011(security) to power up 12 different...
It's not a good solution for me a 30 V dc converter. it will raise its cost a lot. I think i'm going to change device. Using Profet Infineon. Always a smart high side power switch . certified for 12 and 24V automotive use.
Whata do you think about it??
What about if device is openload?
In my circuit this device has usually an Inductive load. but some of them could have load disconnected if not used. and it could happen it is activated accidentally by user.
Do you think this couls cause this kind of fault at higher voltage?
now i'm going to...
could you suggest me any similar device to use in that application??
And if I use 2 or more diodes in series with power supply in order to make it lower of about 2V?
Hi,
I'm working on an automotive device, 24V. I'm using IPS6011 from International Rectifier. It works ok, but when I try to charge battery IPS burn. I noticed that charger raises up voltage to 29V and in datasheet 28V is maximum continuous voltage for this device while 36V is maximum supply...
Thanks for your suggestion.
I was thinking a similar solution but i would have a certainty. something under 10Kohm would fit. what do you think??
by the way should I use also a resistor in series between PCA9555 and mosfet driver input? where do you suggest me to put it? before or after...
HI
I'm intended to use an I2C I/O expander to drive some N-Mosfet by an High side mosfet driver.
I already used PCA9555 to drive some relays by ULN2003. But when I power up my siystem, PCA9555( at startup is set as Input) puts at ON-State, for a moment, all relays.Untill MCU sets PCA9555 pins...
HI
I'm intended to use an I2C I/O expander to drive some N-Mosfet by an High side mosfet driver.
I already used this PCA955 to drive some relays through ULN2003. But when i power up my siystem PCA9555( at startup is set as Input) set at ON-State, for a moment, all relays.Untill MCU sets PCA9555...
step-down 5v circuit
If I decide to use MC34063, do you think i can supply directly a MCU and other logic devices 5V supply?
is this supply clear as a linear 7805?
could I find some problems in MCU working??
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