Hi-MD reccrders will run about 3-8 hours on a single fresh 1.5 volt AA battery and 1.5 - 4 hours on a NiMH rechargeable AA battery depending on headphone monitoring level and other factors. The recorders can also be powered on 3 - 4.8 volts from DIY "battery sleds" that connect to the same "coax" power jack as the AC power adapter. The two, D and four AA cell sleds will run a recorder for about 12 hours.
The Radio Shack type "A" Power Plug fits Sony's DC input jack but you may have to buy their adapter and solder on leads , The true plugs are harder to find. Philmore's part seems to be #235
The Phantom Power Supply units require more current and voltage (12 VDC).Below, a sled of 10 X 1.2 volt NiMH C-size cells is used to run a phantom supply for 24 hours.
Radio Shack's Type "M" Power Plug fits the Roll's and Art Phantom II' s DC input jacks.
The "DC Plugs" used for low-DC voltage products can follow guidelines based on voltage range, but there are exceptions, so be aware.
Voltage Range |
Sample Products | Polarization | Interior Diameter |
O.D. Diameter |
|
10.5-13.5V |
Rolls PB-224; Rolls PB23; Art Phantom II; Sound Devices MP-2 | Usually, positive (+) center and case (-) negative but not the Rolls PB224 or Art Phantom II . The polarity is reversed! | 3.3 mm (pin diam. 1mm) |
5.5mm |
|
"A" |
up to 3.15V |
Sony NH700,800, 900 910 HiMD recorders-- probably the others except for the newest. | For these recorders, positive (+) center and case (-) negative | .7mm |
2.35mm |
? |
13.5-18V, |
4.3 (pin diam, 1.4mmm) |
6.5 |
||
? |
6.3-10.5V |
1.7mm |
4.75mm |
||
"N" |
? |
2.5mm |
5.5mm |
||
"L" |
? |
2.5mm |
5mm |
||
"K" |
? |
2.1mm |
5mm |
||
1.7mm |
4mm |
||||
"H" |
? |
1.3mm |
3.4mm |
||
| Nokia cellphones | 1.1mm |
3.5mm |