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 7805 regulator, 7805 voltage regulator |
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Founded in 1998, China Kaide Car Parts Co., Ltd. is a 7805 regulator, 7805 voltage regulator manufacturer and supplier of car parts and accessories. We can provide our customers with high quality auto spare parts and qualified auto performance parts for many kinds of cars, buses, and trucks. It has years of OES and OEM 7805 regulators, 7805 voltage regulators experiences and passed the TUV certification of ISO/TS16949 quality system. We have introduced advanced technology and equipment to integrate further development and manufacture. |
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7805 regulators, 7805 voltage regulators Show |
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1. The top portion of the schematic is a basic 5 volt power supply. Current draw of the CMOS timer is very low, so a small 120/12 volt transformer can be used. I mounted the 7805 regulator in a heat sink (see picture at right) but it probably isn't necessary. Switch SW1 turns the timer circuit on and off. CMOS 4528 is a dual monostable multivibrator (English translation: two timers in one). As drawn below, the left side controls the spacing between fog pulses and the right side sets the length of the fog pulse. These times are set by the r/c components attached to pins 2 and 14 respectively. The spacing times range from about 8 to 50 seconds (adjustable with pot R1) while the pulse length times are about 1 to 10 seconds (adjustable with pot R3).
Resistors R2 and R4 set the minimum times. The normally open switch terminals of relay K1 are wired to the fogger pump circuit. In the above mentioned fogger, the pump current draw is only 500 ma (1/2 amp) so a relay with 1 amp rated terminals will work fine (I used a minature realy from All-Electronics #RLY-405. It's the little green thing on the circuit board). The relay is wired across the terminals on the fogger remote connector that go to the switch on the remote. These can be found using an omhmeter across the pins on the remote and pushing the remote button. |
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2. This switch mode voltage regulator made by Dimension Engineering is designed to be the easiest possible way to add the benefits of switch-mode power to a new or existing project. The switching regulator will allow you to take a higher voltage and it step down a 5V output in a compact, efficient manner. They have integrated decoupling capacitors, so external capacitors are not generally necessary. The switching regulator is pin-compatible with the common 78XX family of linear voltage regulators used in TE-045-000. The regulator will make it possible to provide a stable 5V from the 9V battery. The left pin is the 9V input, the middle pin the common ground and the right one the 5V output. This model holds 500mA, and a radiator can be added. A dc-dc regulator/converter or another name known as buck regulator, provides stable regulated output voltage to supply electronic circuits. Schematic, PCB layout and component list are available on this page. LM2576 circuits perform same function as the commonly known voltage regulator LM7805 from National Semiconductor. The 7805 voltage regulator dissipates a lot heat. The higher input voltage, the more heat is generated. The extra input energy is converted to heat, keeping the output voltage regulated at 5V. |
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