Yes 3 red LED's. I need to find a way to increase the current externally if thats the case. I dont want to get off topic here, this might be another thread, but I need at least 3mA or 4mA of current on the output frequencies. Basically the LED's are just indicators of the frequencies, then I have the output frequencies going past the LED's with wires. I am not aware yet if 4060B outputs square waves which is what I want from all the outputs at 99% duty cycle and positive offset with no negative spikes.

Since it's a counter, the outputs of each stage will be 50% duty cycle.

It would sure help if you posted a schematic.

 

You read that where?

My apologies I'll rephrase that. I meant 'watched'. I guess I was reading while I was replying.

At 4:15 he describes why.

 

I'm not convinced this guy knows what the hell he is talking about. The 4060 is NOT regulating the voltage. He is abusing the 4060 and relying on its lack of drive capability (essentially high output impedance) to keep it from destroying itself or the LEDs -- very, very poor design practice. He mentions about how removing some of the LEDs impacts the behavior of the rest of them -- well, that's a hallmark of abusing a chip and making it not behave according to spec . He also refers to it as a multiplier chip. It's not. It's a ripple counter.

 

You can use a transistor output buffer to increase the current sufficiently to drive the LEDs.

I assume this will be placed before the LED?
Does a MOSFET or bypass transistor work for this?

 

I assume this will be placed before the LED?
Does a MOSFET work for this?

Yes. It inverts the polarity of the signal, but that may not matter if you are just making a light flasher.

But you still have the problem of powering LEDs from such a low voltage.

 

Yes. It inverts the polarity of the signal, but that may not matter if you are just making a light flasher.

But you still have the problem of powering LEDs from such a low voltage.

Thanks for the input.

I actually bumped it up to 3v now. It's the recommended voltage for reliability.

I am extending the track line past the LED. The LED's are just indicators. Im connecting it to a DC jack where I need at least 3mA to 4mA of current going through it.

I basically have 2v, 5v, and 9v option with the 4060. I need all to output the same current of 3mA or 4mA to the DC jack.

 

@ 3 V VDD you can drive a low Z load ( 10 ohm ) with 4 mA; @ 5 V maybe 4 mA into 600 ohm. 9 V VDD would be my choice.

 

@ 3 V VDD you can drive a low Z load ( 10 ohm ) with 4 mA; @ 5 V maybe 4 mA into 600 ohm. 9 V VDD would be my choice.

Huh? 4mA in a 10Ω load is 40mV. Could you provide details about what you mean?