A hearing aid is provided having a capacitor with a large capacitance
coupled in parallel with the energy source for transient current supply.
The operating period of the battery is prolonged compared to prior art
digital hearing aids. Further, the smaller variations in supply voltage
lead to less distortion of the output signal of the hearing aid signal
processor. In a hearing aid with a telecoil, a well defined current path
for the current transients generating the high magnetic fields picked up
by the telecoil is established. This facilitates the design of a
compensating current path that is substantially independent of battery
type and position.
