I have a small camera with wifi that runs off a 3V CR2 battery. I'm trying to run it from line voltage. Could not find any small transformers that go to 3volt 750mA.
I have an Apple transformer for the iphone it outputs 5volt 1A. (I'm getting 5.33V on the crappy tester)
I've tested a fully charged 3v CR2 and it puts out 3.24volts ; I bought a NTE1904 which has a Vo 3.3V Io of 1A; when i hook it up to the breadboard I'm getting 3.25 volt output.
The mfgr of the camera said on their website that this is a 3V 750mA device; the device with the battery gives off considerable heat and only last a 1.5 hours on the battery.
When I plug it into the output of the voltage regulator straight the light comes on but it wifi doesn't work (bad because its the only way to connect to it); when i switch back to battery she works like a champ. I put 10mu caps on the output side but light didnt even come on.
Am i missing a major concept. I'm kind of a newbie. would appreciate any help.
spec sheet of NTE1904 http://www.nteinc.com/specs/1900to1999/pdf/nte1904.pdf **************** Camera Specifications • VGA 640x480, QVGA 320x240, QQVGA 160x120, up to 30fps • F2.8 • View Angle: 60 degree • Focusing: 20cm to Infinity
Video Recorder • Motion JPEG • Compression mode : standard, high • Typical bit rate: (VGA): standard (2500 kbps), high (1600 kbps) (QVGA): standard (1100 kbps), high (800 kbps) (QQVGA): standard (600 kbps), high (400 kbps)
Video Snapshot • JPEG • Compression mode : standard, high
Wireless Interface • IEEE 802.11b/g 2.4GHz ISM Band
Wireless Security • WEP 64/128, WPA, WPA2
Wireless Range • Infrastructure: 20m (Typical) • Adhoc: 7.5m (Typical)
Wireless performance* • Infrastructure: 54Mbps, max. connection rate • Adhoc: 11Mbps, max. connection rate • Note: Wireless performance varies with distance and access point usage.
Antenna • Single, internal
Dimension / Weight • 30mm(Diameter) x 35mm(L) • 100g
Power Supply / Consumption • Battery operated • Voltage: 3.0V • Power: 750mAH (CR2) • Current consumption: 320mA (typical); 350mA (maximum)
RoHS • RoHS Compliant
User interface • Menu driven via Embedded Web server on module