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I can't do this because the unlimited water supply is waterworks , and the second water supply already has a pump but the pump is 1km away from control point at the tank.
I have to buy pumps and this is expensive.
Currently is the valve switching handled manual by hand, and I want...
i like the idea for 3 way motor operated ball valve.
I never used them before, does this valve consumes power when opened ? Or it is the power only consumed when opening or closing the valve?
I found this one on ebay and it's price is not to high
**broken link removed**
what do you...
I was looking at the latching solenoid valve but they are expensive.
Do you maybe know some cheaper latching solenoid valve?
also here is one non latching
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If my calculation are correct and using two of them it will consume 90kWh in one year.
I'm trying to design some analog circuit for water vale control, here is the simple block schematic:
So the idea is:
we have two independent sources of water and one tank and we want to fill the tank.
First we supply the water trough valve1 and measuring the water pressure in...
I'm not 100% sure but the resistor is what the user have to calculate regard the voltage connected to V+ (3,3V to 24V) to regulate the maximum current throughout the transistors.
But I'm not sure for what voltage is the 270 Ohm resistor.
I came across this schematic for opto-coupled output:
We have FPGA out 1.8V and resistor 100Ohm to regulate the current for diode from MOCD207-M.
I'm not sure how the other side works.
1. How works this circuit?
2. What is the purpose of the diode CDSU4148-HF?
3. What will happen...
Thanks for the info.
But is there a way if i have this slow blow fuse I2t=1.98 A2sec to calculate the proper TVS diode so that the fuse blows before the TVS if there is 200V on power in pin that i protect? (max voltage on power in pin is 24V).
Some of this is described her on page 3 but there...
1)Power rating of the diode is 600W -> datasheet of the TVS and Fuse attached
2) Those are BLM ferrite beads.
The I2t of the fuse is 1.98 A2sec
How can I calculate the TVS needed, in the worst case when there are no Ferrite bead only the fuse and the TVS diode?
I want to protect a circuit that works from following power supply:
Input voltage : from 12V to 24V
Max power consumption 10W -> Imin=0.4A Imax=0.8A
My selected components for:
Fuse : littelfuse NANO2 slo-blo 0452001. (1A)
TVS : littelfuse SMBJ24A (600W)
The questions are:
Some of them will be wires but some will be planes or to say wide wires.
I will use a wire if I have to connect one output of LDO to one pin on uP and use plane if i have to connect SW power supply (VNN) to multiple core pins on uP.
I have a PMIC and an microprocessor and there are lot of...
I'm designing a multilayer PCB (12 layer ) and I decided to use layer 5 and 6 for power distribution.
So the question is can I put one voltage(eg. 1V) on one plane(eg. L5) and then a second voltage(eg. 3.3V) on other plane(eg. L6) on top of it? OR i have to have GND plane In-between...
I have different results of calculation and I don't know which one is the right.
I'm trying to calculate the 50 Ohm impedance on L3,L4,L7,L8 of this stack-up:
Do I threat the L3,L4,L7,L8 as a Asymmetric Stripline?
what calculator should I use?
what is the width of 50 Ohm line on L3...
I'm using Altium designer Summer 2009 and I want to convert the Schematic to OrCad, Allegro, Cadance concept HDL Packaged Schematic files, Mentor Expedition, Mentor DxDesigner, Zuken.
I need only one of these schematic format.
How can I do that ?
I have to connect the reset pin (PE_WAKE_N) form intel i211 to pin (PMC_WAKE_PCIE) on intel atom e38xx.
PE_WAKE_N -> Tri-State is a bi-directional, tri-state input/output pin. (3.3V referenced)
PMC_WAKE_PCIE -> Input (1.8V referenced)
It is enough to connect 4.7k pullup to...
I want to control (switch on/off) inductive motor(230Vac) via relay, and I should use a snubber circuit to suppress Voltage transients.
Do I have to connect the snubber across the relay contact or across the motor contacts (if across the motor , do I have to use 1 snubber(RC) per...