T&L Publications

We need more specifics, like the range of frequencies that have to be phase shifted, and the number of degrees needed, and the tolerance in degrees and dB.

A couple things. The RS232 spec allows a +- 3 volt noise band, and is supposed to have this much hysteresis built into the receivers, but there are some non-standard implementations out there, where the receiver is just a TTL or CMOS gate. OK for across the desk, but suspect for long runs. If your 2...

Put a scope between the grounds on your separate floors and you will get an idea of the common-mode noise you have to deal with. This noise will be complicated by any multiple tying of neutral with ground in your building, which may give you extra-big spikes when heavy loads are started.<p>But the b...

I think Terri got it right. I've had two Ford regulators do this, only at idle, and one was only in the car for a few months. In both case, they worked properly off idle, and I don't consider it a problem. My guess is that they are using an electrolytic in the feedback path, and the high temps (regu...

Depends on what your time is worth. The BS2 is a well thought out device with excellent programming support and a right-now code modify-test cycle. You pay for this with the cost of the chips. You don't really need the development boards; no external active devices are needed; power, ground, a DB9 f...