* oThe ER range of capacitors are specifically designed for DC applications. * oAudio coupling * oPulse forming networks * oOscillator circuits * oArc and spark suppression * oRF by-pass * oTuned filters * oEnergy storage * oIntegrating circuits * oLow and high pass filters * oHigh voltage smoothing * oCapacitors required for AC applications and high discharge rates can also be designed from the ER range.