Re: NE555 Timer Problem
Thanks for the info,that could be the problem because on another circuit I have I used a transistor that didnt have enough gain and it wouldnt switch it unless I used a 100 or 200 ohm resistor between the output and the base.I am going to get back in the shop today and check it out. To answer the question,this circuit is supposed to me a test circuit for me.I used a IC socket so I can remove the 555 chip easily,I set it up for wide duty cycle range astable with a 50k pot and a 3k resistor on the wiper so at either end of the range can never be less than 3k resistance.I put a terminal block on the board connected to pin 2/6 and to ground so I can change out the timing cap quickly without soldering,I am using a 10n presently.Which makes the Hz around 2.5Khz so says my 555 timer pro.And I think it will shift from about 5% to 95% duty cycle