Lrl from Italy

[Napsterce]

Kaligula i have sent you private message.

[kaligula]

Kaligula i have sent you private message.

I can't find it. Send it to my email or write here

[kaligula]

We are starting. I'll gonna make it with transistors BC183L, I
couldn't find BC183C, is it some problem?

[FrancoItaly]

We are starting. I'll gonna make it with transistors BC183L, I
couldn't find BC183C, is it some problem?

All transistors as BC...C, work, "C" is for very high beta (gain). Probably BC ... B types also work. You can measure the transistor beta with the tester, values over 500 are fine.

[kaligula]

All transistors as BC...C, work, "C" is for very high beta (gain). Probably BC ... B types also work. You can measure the transistor beta with the tester, values over 500 are fine.

It supposed to be OK, it is declared as 900

[FrancoItaly]

It supposed to be OK, it is declared as 900

BC183LC is in the range 450 - 900

BC183LB is in the range 240 - 500

BC183L doesn't exist, it must be LA or LB or LC

[kaligula]

BC183LC is in the range 450 - 900

BC183LB is in the range 240 - 500

BC183L doesn't exist, it must be LA or LB or LC

No, it's L, I can't upload pictures. In datasheet which I upload there are L, LA, LB, LC. All of them have same pin configuration. It have bigger range 125-900

[FrancoItaly]

No, it's L, I can't upload pictures. In datasheet which I upload there are L, LA, LB, LC. All of them have same pin configuration. It have bigger range 125-900

Anyway the beta must be more than 500.

[kaligula]

I have other question. Is it big consumer of elecric power? I plan to use 4 batteries from cell phones with capacity from 1000 to 2000 mAh

[kaligula]

I put two variable capacitors from 5p parallel with 15pf, so we'll see the results

[ford]

Hi all
I used BC549B and my Lrl work fine.

Best Regards

[ford]

Hi all
I used BC549B and my Lrl work fine.

Best Regards

BC549B is low noise transistor via 200 ~ 450 hfe.

[FrancoItaly]

The absorption is very small, 20 - 40mA, depends on how many leds are used. I recommend two 9V batteries connected in series.

[kaligula]

The absorption is very small, 20 - 40mA, depends on how many leds are used. I recommend two 9V batteries connected in series.

Great, ill use 4 mobile phone batteries from 3.7v and I'll conect them with 4s electronic board for lithium batteries. I'll have around 15v. I finish soldering today, but I'll try tomorrow or some other day. Thanks Franco for your cooperation. To bed is that I can't upload pictures. Is it there some other way?

https://image.ibb.co/ewNxMa/IMG_20170816_101751.jpg

https://image.ibb.co/ftBoBa/IMG_20170817_153400.jpg

https://image.ibb.co/ep5yBa/IMG_20170817_153418.jpg

https://image.ibb.co/m57TBa/IMG_20170817_153741.jpg

[FrancoItaly]

Great, ill use 4 mobile phone batteries from 3.7v and I'll conect them with 4s electronic board for lithium batteries. I'll have around 15v. I finish soldering today, but I'll try tomorrow or some other day. Thanks Franco for your cooperation. To bed is that I can't upload pictures. Is it there some other way?

https://image.ibb.co/ewNxMa/IMG_20170816_101751.jpg

https://image.ibb.co/ftBoBa/IMG_20170817_153400.jpg

https://image.ibb.co/ep5yBa/IMG_20170817_153418.jpg

https://image.ibb.co/m57TBa/IMG_20170817_153741.jpg

Good work, as regard to upload pictures, you must read forum rules, for example jpg no more than 1M.