A pulsating direct current is a direct current (dc) that changes in value at regular or irregular intervals.
A pulsating direct current may change in value, i.e., be always present but at different levels, or it may be a current that is interrupted completely at irregular or regular intervals (at specific frequency), but when present, is always in the same direction.
Pulsating currents are commonly created by using diode rectifiers or by DC sources connected in series with AC sources (where the amplitude of AC ≤ DC).
Famous quotes containing the words direct and/or current:
“Ignorant kindness may have the effect of cruelty; but to be angry with it as if it were direct cruelty would be an ignorant unkindness.”
—George Eliot [Mary Ann (or Marian)
“But there, where I have garnered up my heart,
Where either I must live or bear no life;
The fountain from the which my current runs
Or else dries up: to be discarded thence,
Or keep it as a cistern for foul toads
To knot and gender in!”
—William Shakespeare (1564–1616)