Actually, the link was to a current limiting PSU. Not about using too many volts.
It's very helpful in preventing damage when making circuits. The maximum current can be set to a value, if it is exceeded, the PSU shuts down. It won't prevent all damage but a good number of times it will. I always use some form of bench PSU with current limiting when testing.
Mike
LO Filter...
Re: LO Filter...
Hello All
Having same trouble as Mike - the RF output switch IC ADG904 is out of stock at Digikey (ADG904BRUZ-ND) and Farnell (2074875). Suppliers now saying JULY for delivery - yuck!
Anyone got a spare please? (will refund costs, of course).
Similar trouble with 0805 Caps - 25uF at 25V for LO filter PCB. Didn't notice the Farnell part nr. (1907510) N/A until May when I placed the order for two. Obviously similar component available elsewhere, but subject to small order charge etc. Anyone spare a couple, please ? (costs paid).
Having same trouble as Mike - the RF output switch IC ADG904 is out of stock at Digikey (ADG904BRUZ-ND) and Farnell (2074875). Suppliers now saying JULY for delivery - yuck!
Anyone got a spare please? (will refund costs, of course).
Similar trouble with 0805 Caps - 25uF at 25V for LO filter PCB. Didn't notice the Farnell part nr. (1907510) N/A until May when I placed the order for two. Obviously similar component available elsewhere, but subject to small order charge etc. Anyone spare a couple, please ? (costs paid).
Re: LO Filter...
The ADG904BRUZ connects a 50 ohm resistor to the unconnected switch terminals. The ADG904BRUZ-R connects them to ground.
On the output switch board these terminals connect to the pre-driver inputs so a short to ground should be OK unless your pre-amp becomes unstable under this condition.
That is not the case for the LO filter.
On the output switch board these terminals connect to the pre-driver inputs so a short to ground should be OK unless your pre-amp becomes unstable under this condition.
That is not the case for the LO filter.
Re: LO Filter...
Hi,
I've got a couple of the required chips spare but unfortunately not the 22uF caps.PM me and I'll see what I can do to help.
73
Malcolm G0UHY
I've got a couple of the required chips spare but unfortunately not the 22uF caps.PM me and I'll see what I can do to help.
73
Malcolm G0UHY
Re: LO Filter...
I've also got a couple of spare ADG904BRUZ-R which is OK for the RF switch if anyone needs them.
Noel - G8GTZ
Noel - G8GTZ