Solving Micro Switch Problems: Maintained vs Momentary

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SUMMARY

The discussion centers on the differences between momentary and maintained micro switches, specifically the SPDT 16A 250V pin plunger type. A momentary switch only activates while pressed, whereas a maintained switch remains in its last position until pressed again. Users seeking a maintained switch should look for terminology indicating "non-momentary action" or consider alternative switch types such as pushbutton, slider, or toggle switches. A potential workaround for a momentary switch is to remove the internal spring, though this requires manual operation.

PREREQUISITES
  • Understanding of micro switch types and their functionalities
  • Familiarity with SPDT (Single Pole Double Throw) switch configurations
  • Knowledge of electrical specifications such as voltage and current ratings
  • Basic concepts of switch mechanics and actuation methods
NEXT STEPS
  • Research "non-momentary pushbutton switch specifications"
  • Explore "toggle switch types and applications"
  • Learn about "removing internal components from switches for custom functionality"
  • Investigate "where to buy electronic components like micro switches" in local hardware stores
USEFUL FOR

Electronics hobbyists, DIY enthusiasts, and anyone involved in switch design or replacement, particularly those needing clarity on switch types and their applications.

NeepGlass
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i am in no way a engineer so i need help
i just bought
(MICRO SWITCH, PIN PLUNGER, SPDT 16A 250V; Microswitch Type:Standard; Actuator Style:Pin Plunger; Operating Force Max:100gf; Contact Voltage AC Nom:250V; Contact Current Max:16A; Switch Terminals:Quick Connect; Circuitry:SPDT)

and it is a momentary switch but i need the same switch in a maintained switch form

what do i need to look for that denotes a maintained switch

I do not know proper terminology what i gather is

maintained switch mean press once for on and again for off
momentary switch means press and hold for on release for off

any help would be great
thankyou for your time
 
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As you say, momentary action is when the switch closes (or opens, depending on how it's wired up) only when it's pressed down. Non-momentary action is the opposite.

I think I've only ever seen momentary action microswitches as they're generally meant to detect when something is physically opened (or closed) or when, say, something has gone too far (as a limit switch).

If you absolutely need that switch, and absolutely need non-momentary action, a hack may be to remove the spring which returns the button. Unfortunately, you'll now have to manually open the switch. If you don't need that style of switch, consider using a non-momentary pushbutton, slider, or toggle switch--these you should be able to easily find at a hardware store or automotive place, or even a Radio Shack.
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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