Questions tagged [push]

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127 views

Latching power with LDO enable pin

There are lots of examples of latching circuits that use a single momentary push-button to turn on/off a circuit by combining two or more transistors. Some examples are: Simple soft power latching ...
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1answer
42 views

NC button to supply +12V to solenoid

I've got a normally closed momentary push button switch that I would like to make behave as normally open. E.g. I press the button and 12V is supplied to the solenoid. I understand that it would be ...
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0answers
26 views

switch button caps leeway

In relation to the answer at https://electronics.stackexchange.com/a/298969/35737, namely when the switch buttons needs to protrude through the casing. I do not have special equipment for precision ...
1
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1answer
43 views

BJTs to drive N-Fet

I stopped using BJTs for a while and now I cant figure out why this configuration does not give me a 12V PWM at the gate of the mosfet? I am only getting slightly more than my PWM voltage about 4.2V ...
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1answer
78 views

Open and Close Circuit automatically (Automate Push Button)

I have a simple circuit board with a push button on it. I just want to automate the pressing action every 0.2 sec or so. The push button has two terminals underneath and I understand that I should ...
1
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3answers
859 views

Using transistors to replace push buttons

I'm looking for a little help designing a transistor circuit. I have a small LCD (I took from an after-market car backup cam system), and I’m trying to control its built-in menu using the buttons of ...
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3answers
89 views

Large button to power on/off items for disabled son [closed]

My husband and I have a disabled son. We are going to build him a sensory panel wall. We would like to have large buttons that he can push to power on/off moving toys/lights/etc. However, we cannot ...
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3answers
94 views

Getting Unwanted Transitional Values from Push Button Switch [duplicate]

When I toggle a push button switch on and off, instead of getting a pure on/off continuity levels I sometimes get "transitional" values. I need it to be purely on/off with nothing in between. What ...
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2answers
629 views

External interrupt on atmega328p

I want to connect 4 push buttons using interrupts on all of them, with my atmega328p, but when i read the datasheet, I found that the atmega328p had only 2 external interrupts ( INT0 and INT1), are ...
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1answer
310 views

Confusion on pop for recursive assembly code

I'm confused on what happens during POP. When POP LR happens does that change the PC to the location of ...
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3answers
672 views

Which push button ratings should be considered due to its data-sheet

I'm planning to use the following normally on push-button switch: http://uk.rs-online.com/web/p/push-button-switches/1336473/ According to the following data-sheet: http://uk.rs-online.com/webdocs/...