AX3022 Switching Regulator Adapter, Step-Down:
- Operating Temperature :-20℃ to +85℃
- Storage Temperature: -40℃ to +85℃
- Max Output current: 1.5A
- Voltage Input: DC 4V ~24V
- Voltage output:2.5V~18V(less than voltage input)
- Max power output:10W
- Outline Dimension：25.4mm*25.4mm
- Based on AX3022 DCDC Converter
- Control the voltage output via EN pin
- Conversion board is provided for easy connection
- Protected by over-current, over-temperature and short-circuit features
These are made by Sure Electronics (Ebay listing). See here for detailed specs.
I actually bought these from Wright Hobbies.
MC34063 Voltage Adapter StepDown I/O:5~24/2.5-12VDC:
- Output Current is no less than 500mA.
- Output Ripple and Noise: Maximum RMS 100mV, @ 3V, 0.5A output.
- Maximum Input Voltage: 24V.
- Suggested Input Voltage: +5 ~+24V DC.
- Output Adjustable Between: +2.5V ~+12V.
- Operation Environment Temperature Range: 0~+55℃.
- Storage Environment Temperature Range:-25~+85℃.
- GND of the board should be connected to GND or the housing of your instrument.
- Input voltage must be 2V or even higher than output voltage.
- If the load is too heavy, the output voltage may be less than expected voltage.
These are made by Sure Electronics (Ebay listing).
I actually bought these from Wright Hobbies.
DealExtreme DC-DC Regulator:
- Input: DC 4V-40V
- Output: DC 1.5V-35V (adjustable)
- Max output current: 3A
Got this from DealExtreme.
Black Wings (3.3v/5v Power Module Breadboard Adapter):
This breadboard power shield support Mini USB power supply and Power jack 7-12V supply. There are two independent power that 5V/3.3V optional. Tow power switchs on board can control each side voltage independent.
This is the supplier. Product notes.
Got this from dealextreme.
S7V7F5 Step-Up/Step-Down Voltage Regulator:
- input voltage: 2.7 to 11.8 V
- fixed 5V output with +5/-2% accuracy
- typical continuous output current: 1 A when stepping down; 500 mA when stepping up
- integrated over-temperature protection
- small size: 0.35″ × 0.475″ × 0.1″ (9 × 12 × 3 mm)
Got this from Pololu.
L 4931 LDO regulator:
- Low Dropout Voltage: 0.4 volt @ 600 μA typical
- TO-92 Package
- 5V Output Voltage
- 6 – 20V Input
- 250mA Output Current
Will work without the caps, may need that if circuit setup is noisy.
LM317 Linear Regulator:
- Vi 10 to 40V
- Vi must be at least 1.5v greater than Vo
- 1.5A, output to 1.2V to 37V
- Ci required when regulator is far from power supply filter
- Co is not reqd. for stability, but improves transient response
- Vo = 1.25(1 + R2/R1)
R1 = 240
| R2 | Vo |
|---|---|
| 680 | 4.79 |
| 750 | 5.16 |
| 820 | 5.52 |
| 910 | 5.99 |
| 1000 | 6.46 |
| 1100 | 6.98 |
| 1200 | 7.50 |
| 1300 | 8.02 |
| 1500 | 9.06 |
| 1600 | 9.58 |
| 1800 | 10.63 |
| 2000 | 11.67 |
| 2200 | 12.71 |
7805 5v fixed Voltage Regulator:
Typically 1A dissipation (in the T0220 form), with input voltage range 7-30V.
This shows the configuration for reverse bias protection (the diode between Vi and Vo) and output reverse polarity protection (the diode from Vo to ground).
Digital Multi-cell Lithium Battery Voltage LED Display:
- Used for up to 4-Cell Li-Po Battery
- Auto shift the voltage data one unit by one unit
- Reverse polarity protection
Got this from Dx
11.1V Lipo Battery Alarm Buzzer:
- Connect to the balance charger plug from the battery. BE CAREFUL about polarity when connecting
- Indicates the voltage level of each cell in the pack. Yellow lights for charged cells, red lights blinking and buzzer for low cells.
- Alarm for 11.1V Lipo Batteries
- Can also use for 7.2V battery packs too.
Got this from Dx
USB DC 1~5V to DC 5V Voltage Step Up Boost Module:
Input voltage: 1~5V; Output voltage: 5V; Output current: 500mA
Got this from Dx
2596 Step-Down Constant Current Module - Blue (3A):
- Input voltage: 4~40V input (limit in 40V)
- Quiescent operating current: 5mA excluding voltmeter ammeter
- Output voltage: 1.2~38V continuously adjustable (default output 5V)
- Output current: Maximum 3A (add heat dissipation when beyond 2A)
- Constant current range: 0.1~3A
- Output power: = Output voltage x 3A for example: output 5V x 3A=15W 12V x 3V=36W 24 x 3A=72W
- Operating temperature: -40'C~+85'C
- Operating frequency: 150KHz
- Conversion efficiency: up to 95%
- Over-current protection: Yes (constant current set-point)
- Short-circuit protection: Yes (constant current set-point)
- Input reverse polarity protection: No (if necessary, add diode into input)
- Input anti-irrigation protection: No
- Resistor identification: Tablet PC Ipad Iphone
- Voltmeter minimum resolution: 0.05V / 0.05A (automatically switch the decimal point within 10V)
Got this from Dx
DC-DC Buck Converter Step Down Module LM2596 Power Supply Output 1.23V-30V:
- Input voltage: 4V-35V
- Output voltage: 1.23V-30V
- Input current: 3A(maximum)
- Conversion efficiency: 92%(highest)
- Switching frequency: 150KHz
- Output ripple: 30mA(maxmum)
