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Automated External Defibrillator Application

System View | Block Diagram
Protection Area
  1. Electrode Protection
  2. Battery Protection
  3. Battery Connection Protection
  4. Button Protection
  5. Mini USB 2.0 Port
  6. Speaker Protection
AED

Speaker Protection

Problem: Speaker-Amplifier Mismatch

High-power amplifiers used with low-power speakers may overdrive the speaker coils with excessive power during sustained high volume whereas low-power amplifiers may be overdriven causing clipping and overloading the tweeters.

 

Solution: PolySwitch devices

PolySwitch resettable devices provide soft switching into a high resistance tripped state, and automatically reset to a low resistance state when power is removed. They have essentially no capacitive or inductive reactance and cause no measurable distortion over the audio range of frequencies.

 

Read more about the Raychem Radial-leaded (R-line) PolySwitch device

Applicable Product Series: RXE, RXEF.
Download R-line Datasheet - (pdf 707KB)
Agency Recognition: UL E74889, CSA 078165_C_000, TÜV.

 

Circuit Diagram / Schematic

 

Application Notes:

Loudspeakers Appnote (pdf 73KB)

 

Competitor Cross-reference

Cross-reference competitor products
NOTE: You will need to know the competitor part number to cross-reference it with our part.

Battery Battery Connection ButtonsSpeakerElectrode USB 2.0 PortBattery Connection USB 2.0 Port Buttons ButtonsSpeaker Electrode Battery