KA2418B - TONE RINGER WITH BRIDGE DIODE
KA2418B/28 INTRODUCTION TONE RINGER WITH BRIDGE DIODE The KA2418B/28 is a monolithic integrated circuit telephone tone ringer with bridge diode, when coupled with an appropriate transducer, it replaces the electromechanical bell.
This device is designed for use with either a piezo transducer or an inexpensive transformer coupled speaker to produce a pleasing tone composed of a high frequencys (fH1, fH2) alternating with a low frequency (fS) resulting in a warble frequency.
The supply voltage i
KA2418B Features
* Built-in full wave bridge diode rectifier
* Low current consumption, in order to allow the parallel operation of the 4 devices
* Few external components
* Tone and adjustable switching frequencies by external components
* High noise immunity due to built-in
