Comparison of Electrical Measurements on Constant Voltage and Constant Current ECT Machines

A constant-voltage and constant-current stimulus isolation unit.

When action potentials from a stimulated biological preparation are recorded i t is essential to isolate the stimulus resistively and capacitively from the ground in order to minimize stimulation artifacts. Such isolation can be achieved by using a transformer of special low-capacitance construction in the output of a stimulus generator (Donaldson 1958). The most widely used arrangement for the...

Measurement of electrogenic-pump current in Aplysia neurones with constant-current and constant-voltage techniques.

1. The responses of the abdominal and pleural giant cells to warming and cooling were studied using constant-current and constant-voltage techniques. 2. The potential change upon warming from about 7 degrees C to 22 degrees C was reversed by application of maintained inward current. The reversal potential was -77 +/- 12 mV. 3. The membrane conductance increased with warming, but was not affecte...

Energy consumption analysis of constant voltage and constant current operations in capacitive deionization

a b s t r a c t a r t i c l e i n f o Article history: Received 2 June 2016 Received in revised form 9 August 2016 Accepted 15 September 2016 Available online xxxx We report our studies to compare energy consumption of a CDI cell in constant voltage (CV) and constant current (CC) operations, with a focus on understanding the underlying physics of consumption patterns. The comparison is conducte...

Assessment of patient preference for constant voltage and constant current spinal cord stimulation.

OBJECTIVES   Spinal cord stimulation devices control energy by generating either constant voltage (CV) pulses or constant current (CC) pulses. This study aimed to investigate: 1) whether patients feel differences between CV and CC stimulation; 2) if patients prefer CV or CC stimulation. METHODS   Fourteen patients blinded to the type of pulse generation received 20 randomized pairs of 15-sec ...

Effects of constant voltage and constant current stress in PCBM: P3HT solar cells