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ideal logic

A logic gate is an idealized model of computation or physical electronic device implementing a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fan-out, or it may refer to a non-ideal physical device (see Ideal and real op-amps for comparison).
Logic gates are primarily implemented using diodes or transistors acting as electronic switches, but can also be constructed using vacuum tubes, electromagnetic relays (relay logic), fluidic logic, pneumatic logic, optics, molecules, or even mechanical elements. With amplification, logic gates can be cascaded in the same way that Boolean functions can be composed, allowing the construction of a physical model of all of Boolean logic, and therefore, all of the algorithms and mathematics that can be described with Boolean logic.
Logic circuits include such devices as multiplexers, registers, arithmetic logic units (ALUs), and computer memory, all the way up through complete microprocessors, which may contain more than 100 million gates. In modern practice, most gates are made from MOSFETs (metal–oxide–semiconductor field-effect transistors).
Compound logic gates AND-OR-Invert (AOI) and OR-AND-Invert (OAI) are often employed in circuit design because their construction using MOSFETs is simpler and more efficient than the sum of the individual gates.In reversible logic, Toffoli gates are used.

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  1. J

    Ideal Logic System S24IE

    This boiler was flooded through the condense drain which was connected to a gutter downpipe that was blocked at the end. The people came home to a flooded kitchen. Water came back up the condense tru the trap up the heat exchanger and out tru the fan and gas valve connection imside the casing...
  2. soother

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    A mate tells me he cured a heat engine leak on this boiler (confirmed by boiler isolation & dripping condensate drain) by adding K-Seal car type sealant, and It's still ok after 5 years. Has anyone else had success curing these leaks with sealant additives?
    • soother
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    • Forum: USA
  3. S

    URGENT Ideal logic losing water!

    Ideal Combi bolier. When I repressurise the system to 1bar it almost immediately dumps the water out the condensate pipe before even switching in on at mains. HELP!
    • Simonzo1
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  4. WaterWorks420

    Ideal Logic Combi ES38 No control

    Hello, I have a Logic Combi ES38 Boiler and for some reason, it's ignoring the commands from the thermostats on the wall, for example, both thermostats are set to off but yet the boiler is still on, I've tried the following: I've turned it to just water and not radiators no effect. Changed the...
  5. M

    Ideal logic plus 30 overheating?

    Hi just wondering if anyone can shed any light on an issue i'm having with my boiler.. Initially started i think after i came back of holiday and the pressure was low on my boiler after topping up everything was fine and boiler operated as normal. A day or so after however i started noticing...
    • macka3
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    • Replies: 2
    • Forum: USA
  6. T

    ideal logic combi +. Dhw problems,

    Boiler has been fine for 8 months then the dhw started getting colder. Replaced the heat exchanger and the flow turbine and all good for three weeks and now cold dhw flowing cold again. Replaced the turbine again and the divert valve and motor and no difference. I have removed the divert motor...
    • theloghouse
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  7. F

    Ideal logic heat 18 not working

    I'm having issues with my ideal logic heat 18, it was showing fd error code so I replaced the flow sensor also thoroughly flushed ot the heat engine and pipe work, it will run fine on service mode but will not fire up unless the heat exchange is tapped lightly then will shut down when tapping...
    • Flaxxx
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  8. M

    Ideal logic+ 30 - Overheating/cutting out?

    Hi just wondering if anyone can shed any light on an issue i'm having with my boiler.. Initially started i think after i came back of holiday and the pressure was low on my boiler after topping up everything was fine and boiler operated as normal. A day or so after however i started noticing...
  9. D

    Ideal logic 30 low gas rate

    Ideal logic plus 30 kw, gas rated at 21 kw net on hit water. Inlet pressure 21mb at boiler, flow rate 12 lit pm, temp 40.3 degrees. Have checked, gas valve, injectir internal boiler pipework for blockages. Fga readings fine, boiler gas rate on central heating 23.5 kw net, service mode gas rate...
  10. F

    seeking experienced advise on an intermittent fault on ideal logic combi?

    My own boiler at home has developed an intermittent fault causing an ignition lock out every week or two when there is a demand for hot water. When reset the boiler runs without issue for a week or two. This fault only occurs on HW demand, there has never been a lock out on CH demand. Ideal tech...
  11. M

    Split heat exchanger on ideal logic

    I went to a ideal logic that is losing pressure every week. So won't fire. Have checked all visible pipework and valves no sign of a leak. I removed sump cover on front of the boiler and there was water under the heat exchanger. I dryed this off left the heating off and the water came back. Has...
  12. E

    Ideal Logic 30+ combi boiler - no heating

    Hi all, Looking for some advice as to why my central heating is not working. We have recently moved 2 radiators, replacing one with a new one. When turning the boiler back on there is now no heating. We have hot water, we have checked the pressure, bled the radiators, reset the boiler. We do...
  13. Q

    Ideal Logic System 24 - F1 error - No idea how to re pressure

    Hello everyone, a friend of mine has recently had a F1 error on their boiler (Ideal Logic System 24). We have looked up what to do and it looks like we need to increase the pressure on the boiler. Seems simple enough. but with the way this was installed we don't know how to do that. we looked up...
  14. S

    F1 Problem on an Ideal logic 24 combi

    Hi My ideal boiler (24) was fitted as a used swap (from a 35) a few weeks ago and the engineer is now ignoring me. It shows F1 and when I top it up (to 1 bar) it works fine for a couple of hours. It then spits water outside to release the excess pressure I guess, then it shows F1 and I...
  15. R

    Ideal Logic + Combi "Flame loss post Stabilisation" error after Smart Meter installation

    Hi all, First off, I'm just a homeowner looking for advice, I'm not a gas engineer. On Friday I had smart meters installed and 5 times since then (never previously), the 3-year-old Ideal Logic + Combi boiler has made a fairly loud humming/vibrating noise while running hot water for a few...
  16. A

    Ideal logic flame loss

    Thanks shaun
  17. J

    Cost to replace ideal logic 24+ sump

    Hi all, I have been informed my boiler sump on my ideal logic 24+ has a crack. A common fault on the ideals by the looks of it. I can source the sump for about 55 quid. How much would you say is reasonable to replace the part. Ps I've just had my boilers serviced and they never noticed the rust...
  18. C

    Ideal Logic Heat 15 - F/A Code

    Hi I wonder if anyone can help with a central heating issue. I have a 7 year old house with Ideal Logic Heat 15 Boiler - this runs central heating and hot water system. Over the past few months I notice the boiler running then cutting out and restarting quite a lot, after 15 minutes of doing...
  19. A

    Ideal logic+ condemned for mixed flue?

    Been called to an ideal logic+ 30c that has been condemned. Standard horizontal flue which goes to a plume kit to extend it past the soffit. Last year I serviced this boiler and this year someone else has been in and condemned it saying it's a mixed flue? I haven't spoke to the engineer who...
  20. J

    Ideal logic + combi 30

    Hello Guys Help needed again problem on the above boiler. Hot water works fine however the heating comes on temp on display goes to 70-80 and the boiler turns off. None of the flow or return valves get hot although the main heat exchanger does. DV motor operates, even with the motor...
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