Product Details
- Model: #1768
Features
- Positive Voltage Regulator
- Small Package
- Positive 12 Volts Output
- Up to 1 Amp out
- Accepts AC or DC inputs
Product Description
This is the +12v Power Supply Kit. It is a fixed, Positive 12 Volt Power Supply designed for the 7800 series of Voltage Regulators. It includes a 1amp Bridge Rectifier with 2 large Aluminum Electrolytic Capacitors for initial filtering. There is also a .1uF cap for some noise filtering and a 1K bleeder resistor across the filter capacitors. The output has a small filter cap and a Red LED with a 470 Ohm current limiting Resistor. It will fit any TO-220 Positive Voltage Regulator such as the LM7805 or the LM7812 or any other of the 7800 series Positive Voltage Regulators. You can use the 78M00 series also. It will actually fit pretty much any 3-Terminal Positive Voltage Regulator, even the TO-92 ones.
It will convert an AC input (max 20vac) into a DC output. The AC input requires a step-down transformer if you are going to connect to your AC line. Do not connect the PCB directly to the AC Line Voltage. It will also convert a DC input into a smaller DC output. This is an extremely versatile PCB. A heat-sink may be required to keep the Voltage Regulator cool, it is NOT supplied with this kit.
The PCB is double-sided, plated thru-hole, 1.20" long x 2.10" wide made of .062" FR-4 epoxy glass. It has green Solder Mask (LPI) on both sides with white Silk Screen on the Top side and it comes with 4 mounting holes. The Voltage Regulator is located near one edge so that it may be heat-sinked if needed.
This kit does not include the tools you will need to assemble the circuit. You will need tools such as a soldering iron, solder, wire cutters, etc.
Customer Reviews
Most helpful customer reviews
0 of 0 people found the following review helpful.
By Tony Stompanado
This unit comes either assembled, or unassembled at a lower price. I purchased the unit requiring assembly. I did not come with assembly instructions, and as a result I probably got a few resistors placed in the wrong place. Anyway, the second this thing saw 12 volts the voltage regulator exploded in half. If I purchase this item again, I'll get it fully assembled.
0 of 0 people found the following review helpful.
By Jim
Hay! You got R1 and R2 reversed in the photo. R1 is supposed to be 10K ohm and R2 is supposed to be 1K ohm according to the schematic.Because of the voltage drops over the Rectifier and Regulator you wont get a stable 12Vdc output until the input is at 15 Vdc.
1 of 2 people found the following review helpful.
By CDP
The NightFire Fxd 12VDC voltage regulator Pwr Supply Kit is easy to solder together, stable voltage and a nice shortcut for projects.
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