Digital Voice Recorder-Playback UM5100
This Circuit is based on the UM5100 which can record speech into a digital memory and then play it back. The device is designed to be used directly with static RAM’s up to 256K bits, or with EPROM ’s or ROM’s for playback only. High quality voice reproduction is possible and note that it is not a “computer voice”, it is the original speaker’s voice played back. The bit rate is adjustable from 10kbs to 28kbs with higher quality at faster bit rates.
Source: http://www.next.gr/inside-circuits/
Digital-Voice-Recorder-Playback-UM5100-l5872.html
Power Supply Switching Power Supply DC to DC Converter Inverter
Battery charger Led flasher Motor speed controller LM317 IC 741
RF radiofrequency Electronic control Digital Circuit Alarm home system
DC to DC converter step up voltage Mini project Temperature control
FM receiver Dual power supply Fluorescent lamp Pic microcontroller
Led display RF amplifier FM transmitter LM324 LM723 TL494
2N3055 LM338 SG3525 Li-ion battery charger Pulse generator

Copyright 2008 www.elecfree.com/electronic/

