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There are a lot of "ready to use" solutions.
One example is here:
**broken link removed**
This is a cheap 230 AC power supply with 24V 5A output.
The clue is , that in fact it is a DC->DC converter as one can see on the block diagram.
At first 230V AC is rectified to 310 V DC (the peak...
You have asked a strange question, I understand your question as follows:
"How to energize the relay , (which needs more than 1,6 V to be energized), using the voltage less than 1,6 V".
May be it would be good if you would describe the task you want to realize.
Important is, if there are a...
Re: Power a PC with 12V
Is 12V the must?
May be you can supply your PC with dedicated battery.
If the last is the case you can supply your PC from 150V DC voltage delivered by 14 batteries 12V each, connected in serial.
AC is not necessary to for the PC power supply.
(There is a rectifier and...
received power equal transmitted power gain
I think that your imagination of processes that take place between transmitter and receiver antennas is correct.
However the way you describe it is not clear.
I would also advice you to check the "20 log (f)" component, I suspect that it is not that...
increase the power on the antennas
There is no direct relationship. Received power depends on few factors:
Power radiated from transmitting antenna (linear dependence)
Distance between transmitter and receiver (complicated relation , for short distances it fall with the pwer of distance...
Good discussion and few good remarks. I must explain myself. At my first post I declared:
Discussion concentrated on main capacitor value (Ok I can agree wit 10 000 uF and with 1 000 uF, both values has their pro and contras, I personally like low ripple at main capacitor so 4700uF for me is...
As often happen the true is somewhere in between so both statements are correct, depending of transformer working condition .
I do not want to analyze problem in deep. I just want to show you a direction you can follow and do a precise analyze.
Lets us simlify analyse by taking into account...
4 x AA NiMH batteries in series give you 4,8-5,2 V (depending on the state of discharge)
You can select between models with up to 3Ah (4,5 hours work of your robot)
The advantage is that you can use the battery block without 7805 regulator so you will not loose power for reduceing 9V to 5 V...
In CRT few days, (or even more) I remember TV waiting for CRT replacemant till next day. Strong spark appeared during discharging the 25kV to GND. BUT! there are voltage multiplayers with 100 Mohm resistance between anode and GND, in this case there is no charge on anode.
Also impostant is...
Current through the LED must be limited. The most common solution is to form a kind of constant current source (or current limiter) by supplying the LED through the series resistor. If your voltage source is very stable the voltage drop on series resistor could be low and the power losses are...
You can also consider supplying the LED from a current source. In such configuration a serial resistor for the LED current limiting is unnecessary so the battery will be used more efficiently.
rs485 convert to rs232 by wire only
"cherukukeshav" reply is correct.
But after a while I came to conclusion that "sundarmeenakshi" statemant that RS485 is for parallel communication can be true if the term "parallel" will be defined more precisely.
RS485 enables "parallel communication", in...
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