Electronics in the Life Sciences

CTo ## Electronics in the Life Sciences When a moving coil meter is subjected to a current alternating too fast far the coil following it to move, the reading obtained is an average value. In the case of the AC in (a), the average voltage is zero, since each positive-going peak is exactly cancelled by the following negative-going trough. After passing the diode ('rectification'), the removal ofthe troughs leads to a situation in which there is a nett positive average voltage, and hence the meter can respond with a reading proportional to the amplitude of the original AC voltage. Front Matter....Pages i-x The Multimeter....Pages 1-10 The Oscilloscope....Pages 11-29 Power Supplies....Pages 30-50 Amplifying Small Electrical Signals....Pages 51-81 Datalogging....Pages 82-123 Controlling Stimuli and Measuring Responses....Pages 124-152 Automated Experiments....Pages 153-174 Pulse Circuits....Pages 175-188 Back Matter....Pages 189-198