Add offser to an RF signal

[Alessandro Esposito]

I have a signal generator I use in the MHz region. It gives 2Vpp max so gr
from -1V to +1V but I need it working from 0 to 2V.... any suggestion for an
offsetting ciruit?
Thanks

 

[Robert Monsen]

"Alessandro Esposito" <theopps75@yahoo.it> wrote in message
news:bmgq0k$2c7p$1@gwdu112.gwdg.de...

I have a signal generator I use in the MHz region. It gives 2Vpp max so gr
from -1V to +1V but I need it working from 0 to 2V.... any suggestion for
an
offsetting ciruit?
Thanks

This might work:

VCC = 5V
|
|
.-.
| | 4k
| |
Input 10uF '-' Output
|| |
o----------||-----------+----------o
|| |
.-.
| |
| | 1k
'-'
|
|
===
GND

created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

It's 3db point is 16Hz, so use it at frequencies above 20Hz or so. Also, use
a non-polar cap. If the output impedance of your signal generator is low,
then this circuit shouldn't affect it too badly.

Regards,
Bob Monsen

 

[Alessandro Esposito]

ok thanks... I suspected was something as that but are 10 years I don't make
anymore electronics and I don't have any books left.

Now I will try this adding a power stage for a high brightness LED
thanks
again
Ale

"Robert Monsen" <postmaster@BulkingPro.com> wrote in message
news:76Wib.126849$%h1.130410@sccrnsc02...

"Alessandro Esposito" <theopps75@yahoo.it> wrote in message
news:bmgq0k$2c7p$1@gwdu112.gwdg.de...
I have a signal generator I use in the MHz region. It gives 2Vpp max so
gr
from -1V to +1V but I need it working from 0 to 2V.... any suggestion
for
an
offsetting ciruit?
Thanks



This might work:

VCC = 5V
|
|
.-.
| | 4k
| |
Input 10uF '-' Output
|| |
o----------||-----------+----------o
|| |
.-.
| |
| | 1k
'-'
|
|
===
GND

created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

It's 3db point is 16Hz, so use it at frequencies above 20Hz or so. Also,
use
a non-polar cap. If the output impedance of your signal generator is low,
then this circuit shouldn't affect it too badly.

Regards,
Bob Monsen