Speaker Turn On Delay and DC Protector Board Set (V2)

[JojoD818]

Hi,

Please check T1 and T2 for proper lead orientation, R1 thru R4 and C1 and C2. It should blink, especially if it's purple! ;D

Cheers

 

[Nikitas]

It should blink Christmas style!!!!Ok, I'll check and get back to you.
Thanks!

 

[Nikitas]

The pinout is ECB and it's placed ok. Could you please take a look at the datasheet, maybe you will see something that I've missed. Maybe these TRs are not suitable for this circuit.

 

[JojoD818]

as a general purpose transistor it looks good to me... btw, a reversed D5 can stop the LED from blinking too....

 

[McQuaide]

Hi all, I'm putting my Mouser order together for the Speaker Protector and Softstart boards and I could use some recommendations. Can anyone point me to Mouser items for the Euroblock, Faston terminals, standoffs, and LEDs?

Also, how about a set of gold plated speaker binding posts?

Thanks!

 

[JojoD818]

Hi, I'm also putting together the part numbers for Digi-Key, unfortunately it's not finished yet.

 

[McQuaide]

Would this work for the terminal block?

1729128 Phoenix Contact | Mouser

Also, here are some faston terminals:

http://www.mouser.com/Connectors/Terminals/_/N-5g5u?P=1z0z63v&Keyword=faston+terminal&FS=True

 

[JojoD818]

That terminal block looks ok. As for the faston terminal this one should work ok 63949-1 TE Connectivity / AMP | Mouser

 

[McQuaide]

That terminal block looks ok. As for the faston terminal this one should work ok 63949-1 TE Connectivity / AMP | Mouser

Thanks! Any recommendations for LEDs?

 

[JojoD818]

I use whatever I have in the DA parts Bin. I tried red, yellow, blue 5mm and 3mm rounds and some rectangular too no problem. Just workout their lead orientation, otherwise they won't light up.

It's more up to your liking really.

 

[McQuaide]

My problem is, when I search for LED circuit board indicators, I get 7,662 matches on Mouser. If I narrow it to 5mm red, I still get 75. 😕

 

[JojoD818]

My problem is, when I search for LED circuit board indicators, I get 7,662 matches on Mouser. If I narrow it to 5mm red, I still get 75. 😕

Here you go...

C566C-RFN-CT0W0BB2 Cree, Inc. | Mouser

 

[McQuaide]

Thanks!

 

[JojoD818]

Thanks!

You are welcome!

Good luck on your build. 🙂

 

[Nikitas]

So, I desoldered the flip flop section and resoldered it and it's fine now. I'm thinking, maybe I'll change the caps to make the blinking less frequent.

I played with it a little, and noticed that when I plugged to the speaker connection a 9v battery the relays went off.So a question popped in my head. What's the mininum dc that makes the relays go off? I tested with 1,5v but nothing happened.With 3v it was going on/off constantly.
How could we bring the sensitivity down to 1-1,5v?Or is it too low you think?

 

[JojoD818]

Glad the blinker is now "blinking"... ;D

It was meant like that to eliminate any false tripping of the relays. If you are worried about DC offsets reaching 1V to 1.5V and you want to deactivate the relay, the two 27K resistors can be reduced to about 15K. Be warned though that I cannot guarantee any false tripping especially when playing loud levels so I suggest that you leave that be.

 

[Nikitas]

I hate it when the problem is a bad soldering. I would prefer having misplaced a component than this. It's complete and utter idiotic I think...

hmmmm yes I think you are right. What offset are we aiming for with the 27k resistors?

 

[JojoD818]

It happens to all of us, the bright side there is you did not commit a mistake in installing any parts and it's orientation. 😉

My specimen here quickly disconnects at about 5V or so.

 

[Nikitas]

Alright, thanks!

 

[Nikitas]

Update: I did some more testing and I decided to use 18k sensing resistors. With this value it switches off at 3v, which is enough I believe, so I leave them like that.
Purple Blinker is alive!