Questions tagged [latching]
A circuit or component that maintains its state after being activated (e.g. a latching relay which only requires power to change its state, then maintains its contact position even without power applied to the coil).
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Lolin32 Lite as datalogger with SD card - Auto Latching circuit without pushbutton [closed]
pretty noob in electronics, will try to explain my problem:
I have made a datalogger (saving to sd card) with an Lolin32 Lite in my car trunk, powered from car 12v through a buck to 5v. So it is only ...
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Is there something wrong with this power-on latch circuit?
I am analyzing an electronic device that has an MCU and the following characteristics:
it is powered from a 3.7 V Li-ion battery
it has an on/off button that needs to be pressed 1 second to power-on ...
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Lowest-power approach for latching circuit for high-wattage load
I'm investigating the lowest power approach to have a single momentary push-button switch function as an on/off switch for a high-wattage load (13.8V, max 5A)—i.e., a single push gives power to the ...
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Single Switch with Momentary and Latching/Hold Properties Using CMOS/Logic (no µP/microprocessor)
I am looking for a CMOS/logic based solution (no µP/microprocessor) to a momentary switching scheme I'd like to implement that involves the following scenario:
1: pressing a momentary switch engages ...
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Comparator connection with SR latch v2
I designed a comparator that sets 12 V on the output whenever there is overvoltage on the input of the comparator (13 V from AC sin source). In my schematic, the output value of the SR latch reacts to ...
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Latch circuit to cycle power in an ATX PSU
I'm designing a system powered by an ATX PSU. I'd like it to be able to be switched on and off by a momentary switch but also to be able to be turned off by another input.
The latch circuit is powered ...
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Explain schematic for one-shot trigger
Can you please help to explain following schematic:
How does this circuit work?
What is the purpose of the diode and the capacitor?
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Simplify a relay based latching circuit
I have designed a relay based circuit to control main power to load.
How do I simplify the circuit to have less relays, especially less double pole relays? If necesssary, transistor is also acceptable....
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How to create a power latching circuit without to exceed the GPIO specifications of an battery driven esp32 for a zero current power consumption
I want to operate an ESP32 with a 9V battery pack. In-between there is power latching circuit which is responsible for feeding a LDO voltage regulator with power for the micro controller module (ESP32)...
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Level shifter: clamping (input+VccA) when input and VccA are powered from same signal
I'm currently testing a PCB I designed, and found out the following circuit don't work properly:
the SYS_EN signal is connected to a 1.8V rail through a 10k pull-up resistor.
TXU0101DRYRU5 is a level ...
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Soft latching power circuit stops working after heating
I implemented the below latching power circuit (can be found here https://circuitcellar.com/resources/quickbits/soft-latching-power-circuits/) that has 1 button to turn the circuit on and is turned ...
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Latching comparator always starts at latching position
I build a over-current protection circuit using a latching comparator, below circuit diagram is the simplified version (without the current limit circuitry):
simulate this circuit – Schematic ...
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Is there any such thing as a tristable, quadristable, etc. multivibrator?
The title says it all.
Is there a discrete circuit that can produce 4 different outputs based on a single tactile switch click?
I'd like to do this with either a discrete design or a 74373 since ...
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How to make latching valve turn to close orientation when power fail when controlling it with H bridge of MOSFETs?
I am making a circuit which controls a latching valve this valve is going to be controlled with 2 pins from my MCU. The valve must turn to the close orientation when power fails either from battery or ...
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Emergency stop behavior - state of normally open switch when activated
I am using and emergency stop in an application. It is a push button with a twist release. I have the main circuit connected to the normally closed side and a detection circuit wired to the normally ...
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