the switches are only to choose between if i want one or another, regular on/off ones.1. Please repost the schematic with reference designators for the two switches.
yes2. Are you saying you want to limit the voltage going to the LEDs to a max of 13.5 V and a min of 8.5 V?
yes,3. Do the LEDs have built-in current limiting?
i need a small delay...5. What is the purpose of C1?
1. Please repost the schematic with reference designators for the two switches.
I'm not asking for the switch type or part number. You should assign a unique reference designator to each switch (SW1, SW2, etc.) so they can be discussed without errors. If I say "When you press the switch ...", how do you know which switch I am referring to?the switches are only to choose between if i want one or another, regular on/off ones.
the idea is to have that safety for both D17 And D22 individualy!If you want to limit the voltage to both LEDs to be 8.5-13V, what will do that for D22?
My first schemmatic, so trying to learn..Why are you using a power transistor for Q1 and rectifier diodes for D1-D3?
both D17 and D22 if i feed them with more than 13.5v they blown.What do you think is limiting the LED voltage to your desired range?
yesIs it possible for V1 to go above 13.5 V? If so, this complicates the circuit because now it has to turn off the LED(s) even when switches are preased.
I'm not asking for the switch type or part number. You should assign a unique reference designator to each switch (SW1, SW2, etc.) so they can be discussed without errors. If I say "When you press the switch ...", how do you know which switch I am referring to?
Schematics should flow primarily from left to right and top to bottom. We avoid unnecessary wire jogs and try to align components.My first schemmatic, so trying to learn..
What are the LED specifications?both D17 and D22 if i feed them with more than 13.5v they blown.
Led Specs-What are the LED specifications?
I have no idea why is showing 0.66....Why is the meter on D22 reading 0.66V when SW2 is opened? Do the blue squares denote nets at 0V?
The voltage on my car is not always 12v.Since you want to limit the voltage to the LEDs, that implies that the input voltage can change. Why don't you just regulate the input voltage?
LED lights intended for autos will operate from the full range of voltages that could be present. The peak voltage from an alternator can be higher than 13.5V and it shouldn't harm the LEDs. If the voltage is below 12V, you could add a low voltage cutout if you're forget to turn the LEDs off.The voltage on my car is not always 12v.
Problem solved.Probably a leakage current artifact of the simulation program. Add a 1K resistor in parallel with D22 to give the current an alternate path to GND.
according with my idea, i should use a 10k 3w resistor there right? or can i use a smaller w one?Probably a leakage current artifact of the simulation program. Add a 1K resistor in parallel with D22 to give the current an alternate path to GND.
You would need 173V to dissipate 3W in a 10K resistor.according with my idea, i should use a 10k 3w resistor there right? or can i use a smaller w one?
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