Im new to this and this is not my design. somebody used these measurements for the same function i intend to. i know im using a 10k trim pot instead of a 150k. Could that cause the led speed not to change? What about the order i place the wires to my prototype board? other than that power supply and components are fine.Reasons why it may not be working.
1: Power supply issue ---------------> Check for correct voltage & polarity
2: Incorrect wiring----------------------> Check wiring
3: Faulty components----------------> Check components, does LED work, is pot shorted or open circuit ?
4: Incorrect values used------------> Are resistors correct value ? Is your cap the correct value ?
What do you think your frequency range should be ?
It flashes just at a slow rate that i cant adjust using my trim pot. i can tell it flashes once anout every 5 seconds and cant be adjusted with the trim potChanging the value of the pot will affect the frequency.
With the values shown (changing the pot for 10K) you will have a range from 22.5hz to about 5.5hz.
The LED may not appear to be flashing to you. As long as the wiring goes to the right place it should work.
This link may be of help in choosing some values to slow the circuit down to prove the circuit at a slower rate.
I should be getting a higher frequency which will cause the light to blink faster correct? Now when i plug my trim pot in the LED doesnt light up but when i remove the trim pot it does.Going by the values you have given you are not even close to the frequency you should be getting. Check the link I gave you and put in the values you have given.
|Thread starter||Similar threads||Forum||Replies||Date|
|T||Need some help, Cant find transistor||Analog & Mixed-Signal Design||13|
|M||"I cant think of an electronics joke CURRENTly" however I could use some help on a project.||General Electronics Chat||24|
|S||Help, Cant get my first LM741 inverter circuit right.||General Electronics Chat||8|
|K||Open circuit time constant example. Cant work it out. Help!||Homework Help||18|
|J||Help With Circuit,, Auto Dimmer, cant find one||General Electronics Chat||3|
|Need some help, Cant find transistor|
|"I cant think of an electronics joke CURRENTly" however I could use some help on a project.|
|Help, Cant get my first LM741 inverter circuit right.|
|Open circuit time constant example. Cant work it out. Help!|
|Help With Circuit,, Auto Dimmer, cant find one|
by Jake Hertz
by Luke James