• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Remote Controlled Stepped Attenuator

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
note one thing -- it isn't surface mount -- so one wonders how close to "state of the art" it really is -- if you look at the schematic most of the functions could be done with one PIC RF microcontroller and 8 relays with "through hole" resistors for 8 bits of attenuation. the device pictured only uses 6 bits (2^6=64).

The LED's really provide little information for the user, but have the advantage that they are cheap.

but if you aren't into programming MCU's it is a nice drop in replacement.
 
note one thing -- it isn't surface mount -- so one wonders how close to "state of the art" it really is

I'm sorry, I don't understand that. What difference would surface mount make -what is surface mount here, the resistors?:xeye:

but if you aren't into programming MCU's it is a nice drop in replacement.

:rolleyes: Ancient tube technology is what I'm trying to master so far, anything beyond that :whazzat:

Anyone out there who has actually used this piece?
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.