constant-current

The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply.

The machine thus acts as a constant-current generator, where the current is proportional to the excitation.

R6 provides the load for Q3 (a better design would probably use some form of active load here, such as a constant-current sink).

Each circuit also contains a constant-current transistor and suitable biasing resistors.

Stage 1 is called the I-phase, constant-current stage, or bulk charge stage.

LEDs should only be connected to constant-current sources.

A metadyne can convert a constant-voltage input into a constant-current, variable-voltage output.

Fig 4 Emitter-follower with constant-current source replacing emitter resistor.

This circuit can be modified for constant-current or push-pull operation exactly as for the simple emitter-follower.

Because the charging voltage is nearly constant, constant-current charging delivers energy at a near-constant rate.

Constant-current diode is an electronic device that limits current to a maximum specified value for the device.

In 1829 he invented a constant-current electrochemical cell, the forerunner of the Daniell cell.

This inductance can be measured by connecting a constant-current alternating current source to the rails, and measuring the voltage which results.

The typical solution is to use constant-current power supplies to keep the current below the LED's maximum current rating.

Power is supplied to the inner conductor of the coaxial cable from an external constant-current supply of 0.5 to 8 mA.

Battery chargers are the largest single application for current controlled power supplies requiring either constant-current or constant-power output characteristics.

Nicads require constant-current charging.

The upper tube also acts as both a cathode follower and as a constant-current source for the lower tube.

The approximately constant-current region of low slope at high anode voltage is also a distinctive characteristic of the tetrode.

Lapicque used constant-current, capacitor-discharge pulses to obtain chronaxie for a wide variety of excitable tissues.

Weiss used rectangular, constant-current pulses and found that threshold charge required for stimulation increased linearly with pulse duration.

Some manufacturers follow this stage by a second constant-current stage (with a gradually increasing voltage) before continuing with the U-phase.

The Van de Graaff generator can be thought of as a constant-current source connected in parallel with a capacitor and a very large electrical resistance.

Depending upon the capacitance and the quality of constant-current pulse-width modulation, this can largely eliminate modulation at 100 or 120 Hz.

Indications are that the magnetospheric energy source for these two events more closely resembles a constant-power generator rather than a constant-voltage or a constant-current generator.