All Questions
Tagged with logic-level switches
12
questions
1
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1
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Making a circuit switch using MOSFETs
I am trying to control the choice of 2 circuits using MOSFETs, at logic levels. Basically, I’d like to have one circuit feed bits to an IC in some conditions and another circuit do the same in ...
- 435
1
vote
1
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706
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Logic Converter driving logic level Mosfet Gate
I am wondering if anyone can comment on the feasibility of this circuit. My ultimate goal is to switch a 12V solenoid on and off using a 3.3V microcontroller, but I have had trouble so far. I want to ...
- 73
1
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2
answers
366
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Logic level switch controlled via ground (0 V)
simulate this circuit – Schematic created using CircuitLab
My goal: to convert a ground signal pulse into a +5 V signal pulse.
My question: How on earth do I do this?
Backstory: My Jeep ZJ ...
0
votes
1
answer
25
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How to make a parallel connection between two components when each has its own voltage?
I have a problem to determine whether or not it is safe to make a connection as picture below. Currently I have a H7EC counter connected to a switch and it has 2.7 V across terminal 1 & 2 on the ...
hudsonhock
1
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1
answer
136
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Data source switch with simple logic level shift
I would like to hack a 3.3v UART controlled Self Balancing Scooter in away that it can keep old logic (control), but optionally it should be able to switch to external control data source.
The ...
- 113
-1
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2
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1k
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Three Way Light Switch using Two Binary Switches
Somebody presented me with an interesting problem that I can't seem to figure out. Is it possible to build a three-way switch circuit for a light bulb (akin to common household light fixtures) using ...
2
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1
answer
1k
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How to turn a DIP switch into an array of logical values
Is there a better way to turn a open/closed switch into a logical value (capable or sinking or sourcing current) other than:
simulate this circuit – Schematic created using CircuitLab
I'm ...
- 982
1
vote
2
answers
228
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MOSFET-N as a switch for several ICs
I want to use MOSFET-N (MTM232270LBF) as a power switch for several ICs in my project. It should poweron the devices when logic level is high (3.3V) and poweroff when 0V.
I want to ask you if ...
- 137
5
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3
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2k
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Switch (Relatively) High Voltage from Logic Level
The Situation:
Basically, I would like to switch a load that requires 30v using a switch that cannot have more than 5v across it. More descriptively, I am trying to drive the anode of a VFD segment ...
- 108
0
votes
1
answer
232
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Rotary Switches - 4 Positions, Two Outputs - How to determine the selected "mode"?
My apologies for not such a great description.. so I will clarify here.
I have a rotary switch from an old aircraft panel that has 4 positions and two outputs.
Using my voltmeter's resistance mode I ...
- 77
0
votes
2
answers
165
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Measuring Switch State using PIC
What is the best way to measure the state of a latching switch using a micro controller?
Keeping in mind the voltage level of the input to the switch is higher then the maximum voltage input to a MCU ...
- 911
0
votes
2
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533
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why emitter is connected to high level and collector to low level?
generally, in all switching circuit, emitter is connected to ground and collector is connected to high level. i am not getting why is it so? is there any special purpose?
- 117