single supply op-amp rectifier

You need to use resistors etc to make the bias points. The time constants only depend on the capacitors and resistors that interact.

Go get yourself a copy of LTSpice AKA SwitcherCad-3 from

What kind of rectifier is it, inverting, non-inverting, full-wave, half-wave, how much current is that milliammeter sinking, and what frequencies are you working with? Generally, very little reworking is required. Take a look at your schematic, then everywhere you show GND, pencil in VGND for Virtual GND, and where you have -5V, pencil in GND, this now your new physical Ground. The VGND is usually, but not necessarily, half the single supply voltage or Vsupply/2. In order to avoid problems with DC offsets in a precision circuit, this is usually produced by a single circuit at a single node and then distributed to all the VGND nodes in the circuit, and that single circuit usually consists of a resistor voltage divider between Vsupply and GND buffered by an opamp with heavily bypassed output for decoupling.

Does your ISP charge you by the letter? Or more for Capitals than smalls? What the hell is a CT? My ma doesn't have a meter. Pa does, though.

Jim

-- "If you think you can, or think you can't, you're right." --Henry Ford

Jim,

CT is a current transformer. ma=3DmA. Thanks for your corrections.

Daniel

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