Re: Modifying a Blood Pressure Pump to Switch an LED
See post 15.
See post 15.
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Modifying a Blood Pressure Pump to Switch an LED
You're a PRO!Comment
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Re: Modifying a Blood Pressure Pump to Switch an LED
Dump valve impedance is 40 ohms.
There is no resistor between the ATMega128A and Gate 2 of Q1. Gate 2 is 5V above ground potential when the dump valve is closed.
R4 is connected to pin 2 (trigger) of the 555 timer.Comment
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Re: Modifying a Blood Pressure Pump to Switch an LED
What is the supply Voltage for the valve, 12V? Just trying to find out how much current is being used by the valve.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Modifying a Blood Pressure Pump to Switch an LED
Supply for the dump valve is 6.27V from the voltage regulatorComment
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Re: Modifying a Blood Pressure Pump to Switch an LED
That is odd Voltage for regulator.
That will be about 157mA for the coil.
Based on the resistors as shown in the circuit, that is about right, around 6VDC.Last edited by budm; 01-23-2017, 12:32 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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I got lucky that when I got home and was about to get some ice out of the ice dispenser I hear and see water running down the outside of the ice dispenser what the heck is going on here
At first I thought that the ice dispenser mold was cracked so I brought a new ice maker because this one has been in there for about 10 years now
Well I put the new one in and wait and I wait for the water valve to open and let water in no such luck well there is a way to check the function of the motor and the water valve on this ice maker just need a jumper wire “L” to... -
If you have this Desoldering Gun Station there is something you should be aware of the two screws that hold the motor to mounting for pump can come loose and make raddling noise
One note this unit has been repaired already once because of switching power supply regulator ic chip failure
Now this with the vacuum motor mounting issue yes I give this Desoldering station a very hard work out and use about every weekend to do some type of project
The fix is taking the vacuum pump assembly out and take the metal cover off and you will see the two screws on it
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Good day folks. A task was given to me to redesign the control system for a pump system in a remote location. The idea is that there's a tank which has a float or some sort of switch/sensor to detect when it's full/empty and this runs some pumps accordingly. The trouble is the pump and the tank are like 4km apart, from what the chap who inspected them on our behalf told me, so the way this currently works is by using some unknown boards based on SIM cards (see the pictures). From what I can assume, when a contact closes at the "client side" (the tank), it calls up the "server side"...
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Good day folks. Some of you may recall that a while ago I was struggling to put together what I considered to be a very basic automation for a water supply system. It didn't work out the way I intended and I learned my lesson to do it properly from the start, rather than try to reinvent the wheel and patch something together myself from scratch, so I'll stick to commercial alternatives for future projects and such a project just came in today !
This one is easier simply because this time the pump and level sensors are in the same place, so they don't require a remote connection.... -
Hello,
Does anyone have a wiring diagram for the pump mentioned?
The markings on the board are 98800964 r07, two or three capacitors are burnt.
I don't have the board with me yet, but I don't know if the printed lines on the board are visible due to the short circuit that occurred and how the capacitors were connected.
Comment