Tuesday, December 22, 2015

Mini led flashlight circuit schematic diagram

This led lamp circuit can be used as a mini led flashlight. Together with a 1.2 V rechargeable battery, all the components fit into a small enclosure. This is actually a DC to DC converter that convert voltage from a small value to a higher one.
The voltage of the battery affects the brightness of a light-emitting diode but if you use this circuit that won’t be a problem anymore. One difference between 1.2 V and 1.5 V is practically not detectable.
The capacitor C1 is used as afterglow when switching off the power supply voltage. If you don’t need this you may disconnect C1. For coil L1 you should use a 82 µH or a 68µH. If you use a lower value for L1 then the circuit will consume more power than really should do.
Although this mini led flashlight kit contains an IC, this circuit is suitable for beginners. This circuit is fast and allows a quick sense of achievement. With a bit of skill to make a case (such as a can or box) is adopted so that this circuit with battery takes place.
mini led flashlight circuit schematic diagram

Led Flashlight circuit diagram

Components Values
IC1 = DC-DC converter – LT1073-5
L1 = Coil – 82 uH
C1 = Capacitor 220 μF
D1 = Diode 1N5818
D2 = LED / White / Super bright

Sunday, December 20, 2015

OCL Subwoofer amplifier TIP3055-TIP2955

Power amps OCL circuit for subwoofer included in the category of easily assembled because the circuit is very simple and does not require setting bias, stay to make the PCB track, install the components and can be used.

As shown in the figure above OCL amplifier circuit, there is no need in the settings, so assemble OCL power amplifier module is as easy to assemble amplifiers using IC. You can use the output transistor TIP2955-TIP3055 or MJ2955-2N3055 generate 75 watts of power which is powerful enough for a hi-fi amplifier at home as well as for power subwoofer. Below the pcb layout design for OCL power amplifier subwoofer

Layout pcb ocl amplifier 3055 2955

Hi-Fi Mosfet Power Amplifier 2SJ162-2SK105

Circuit of amplifiers mosfet which has up to 100 watts RMS power by module on the speaker 8 ohms or 160 watts RMS at 4 ohm speaker load, with distortion + / -0.1%. Hifi amplifier circuit is quite easy to assemble because of the simple design. Class AB power amplifier is when we look at its specs are good enough to hifi system at home.

circuit amplifier 100W hifi mosfet amplifier class ab

In this part of the final amplifier mosfet transistor amplifier using a pair 2SJ162-2SK1058 are easily available in the market. You can also use a pair of transistors mosfet other series such as spouses IRFP240-IRFP9240, 2SK1530-2SJ201 or BUZ900DP-BUZ905DP with attention GDS pin or GSD. In the power supply using a transformer 5 amperes or more on 32V-0-32v. Capacitor bank for 4x 6800 μF / 60V. And below layout pcb design for 100W Hi Fi Mosfet amplfier circuit schematic :

Layout pcb 100W hifi mosfet amplifier

Tuesday, December 15, 2015

Super Bass Amplifier LM3886

LM3886 ic original
Super Bass amplifier circuit LM3886 is a series of medium power amplifiers are used to amplify the tone super bass ( subwoofer ) in the room. Super Bass Amplifier circuit LM3886 can be used to drive low-power Subwoofer speaker . Super Bass Amplifier LM3886 circuit can generate power 68 watts RMS at 8 Ohm load subwoofer speakers . Super Bass Amplifier circuit LM3886 is built using LM3886 power amplifier IC and an operational amplifier ( Op - Amp ) NE5532 to build a network of active filter super low tone ( subwoofer ) . To create a Super Bass Amplifier circuit LM3886 can be seen as the components used by the image

superbass circuit schematic lm3886

Active low pass filter circuit on the circuit Super Bass Amplifier LM3886 is built using a series of operational amplifier ( op-amp ) NE5532 IC configured as a cross-over active subwoofer . The audio signal output from the subwoofer crossover and then amplified by the power amplifier gain clone IC LM3886 to drive the subwoofer speaker . LM3886 power amplifier IC circuit on the circuit Super Bass Amplifier LM3886 supplied with DC voltage source symmetrical ± 25 volts with a current 6A . Super Bass Amplifier LM3886 circuit in the image above is complete with power supply circuit with 15V voltage stabilizer 7815 and 7915

Monday, December 14, 2015

OTL 100W Power Amplifier Diagram

Circuit power amplifier type of OTL (Output Transformer Less) it has an output power of 100 watts RMS for 8 ohm load.As called OTL power amplifier as the system output power amplifier circuit does not use a transformer coupling to the load and is not connected directly to the load, but using coupling capacitors to connect the output terminal circuit power amplifier with loudspeaker loads.


Which makes the power amplifier circuit is referred to as power amplifier OTL is the installation of the coupling capacitor at the output terminal. Coupling output power amplifier circuit using electrolytic capacitors C8 2200 / 50v to connect the output terminal to load loud speaker. To make a series of 100-watt power amplifier assemblies can be seen images OTL circuit and components that are used as shown above.

Power amplifier circuit was built using some transistors with a system output is a series of push-pull power transistor MJ15003 and MJ15004 as a power amplifier. OTL power amplifier circuit 100 watts in the image above is a class AB power amplifier that is operated with a single DC voltage source + 90 volts DC.

Output power can be generated by the power amplifier circuit is 100 watts RMS with a load in the form of loud speaker 8 ohm. Power transistors in series OTL 100 watt power amplifier must be equipped with a heat sink on the job whose function is to absorb the heat produced by the power transistor. To avoid the surge voltage at the output terminal circuit 100-watt power amplifier OTL this needs to be supplemented with a series of delay (speaker protector) to connect the output terminal to the loud speaker.

Simple Current Amplifier Circuit

In this schematic diagram, this current amplifier circuit using a positive regulator LM 317 LM 78XX and also strung together to get the desired voltage current retrofitting. Usually in a positive regulator of this, only the drain current of 1 Ampere. And the function of the transistor is what can make the value of the voltage is increased in the area of ​​the regulator. The magnitude of the current flow is of course dependent on the value of the transistors used. The greater the value of the transistor, the greater the value of the voltage current.

current amplifier

To assemble the current amplifier, you need the following components:

R1: 1 R - 2 W
R2: 10 R - 2 W
C1: 50 V - 1000 uF
C2: 35 V - 470 uF
Q1: TIP 2955
IC1: 78xx regulator LM 31

After getting these components, you can start assembling by following the scheme picture above. As mentioned earlier, you can add a transistor circuit in accordance with needs. If you want to drain a large voltage, of course you should use a transistor that has a great value as well. But if you want to use a small voltage, of course the opposite.

500W Power Amplifier B500 APEX

Power amplifier circuit schematic APEX following B500 visible part of the Pre-Amp use type IC NE5532. The output of IC NE5532 is given to the driver amplifier transistor. Part of these drivers will have two different outputs of phase from each other by 180 °. Part driver consists of transistors Q1, Q2, Q3 and Q4. Because the final amplifier circuit requires considerable input signal, then the driver is compiled with Darlington configuration.

Schematic B500 APEX 500W Power Amplifier
Schematic Diagram
Kits B500 APEX 500W Power Amplifier
Kits B500 APEX 500W Power Amplifier

To be able to work optimally, the power amplifier circuit B500 APEX requires ration symmetrical voltage of ± 90 volts, with a current 15-20 Ampere. Use the original transistor amplifier, especially on the final / final, because the source of the applied voltage (± 90 volts) just for the ideal transistor or original. If unsure transistor used is not genuine, then do not ever use a working voltage of ± 90 Volts, because it can lead to the final amplifier transistor broken / damaged. To test this, use a voltage gradually, ranging from ± 25V, ± 30V, ± 45V, and so on.

In the assembly do not forget to give the room a good cooling in all transistor power, attach the fan (blower) to be stable when working at maximum volume primarily for purposes such as concerts stage.

Sunday, December 13, 2015

100W 2N3055 Power Amplifier

This is a easy 60w class b amplifier. This audio amplifier can make outpur power from 80 to 100W with the most input voltage 30 -60V.Eight – 1v. It's far constructed with the widely known 2n3055 and might supply up to 100w on a 4ω speaker.

high power amplifier

Audio control Toggle Switch IC CD4027

Here is a simple toggle switch that may be operated thru sound alerts along with whistle or clap. The output of the toggle remains both low or excessive until the microphone senses the next sound sign. The circuit is too touchy and can be used to govern ac hundreds through the relay.

The sound signal received through the condenser mic can be amplified by using ic1. Tl071 is the high gain operational amplifier used inside the preamplifier phase of radio and tape recorder. The amplified output is used to manipulate the jk flip flop ic cd4027 designed inside the toggle mode. Whilst the clock enter pin 14 of ic2 gets a low to excessive pulse from ic1, its output turns high and stays as such. While the following pulse arrives, the output of ic2 turns low. On this way it capabilities as a toggle switch. Variable resistor vr adjusts the sensitivity of mic on the unique sound degree. Relay driver t1 can be used to perform the relay.

Wednesday, December 09, 2015

Subwoofer Power Amplifier 40W

This amplifier build for subwoofer speaker system. This amplifier using TDA2030 and 2 transistor to driver nd boost the power output.Output Power is about 40W supply voltage of 12 to 44 V. Very simple subwoofer amplifier but so must powerfull.

Subwoofer Power Amplifier 40W

Part-list: R1-R3, R7 = 100 K? R6 = 8,2 kW R4, R5, R8, R9 = 1.40 Ω 1% R10 = 1 Ω C1 = 470 nF C2 = 10 V μF/63 C3 = 4.7 V μF/63 C4, C5, C7 = 220 nF C6 = 2200 V μF/50 C8 = 1000 V μF/50 D1, D2 = 1N4001 T1 = BD712 or BD912 T2 = BD711 or BD911 IC1 = TDA2030A LS = speaker - 4/8 Ω Cooling = Fisher SK08/75

Motorcycle or Car Lamp Controlled Relays

car lamp controlled relays circuit
Circuit above is automatic starting relay low or high beam car lamp ,If your car lights less bright this circuit is very useful if the voltage of the output connectors car manufacturers already drop, it can be caused by a worn cable, short-circuit etc. Circuit work connect lamp directly with the source voltage of 12V battery. Then the light will be able to more light, this usually occurs in car output in older car. 

Monday, December 07, 2015

DIY Car Turn Signal with LED with diagram

Turn signal led

The circuit above is assemble the LED Use the all Resistor with 220 Ohm and LED use 3.5mm Orange or Yellow colour. Circuit above is Unlimited assemblingand the power suplly is output from Turn Signal light Right or Left.

And you can make the Car Turn Signal as designed below :

Custom Sein LED

Custom turn signal lights

Turn Signal LED

DIY Car Auto Rear View Mirror with alarm remote

In the previous video post DIY Car Lamp/Lights Handle , you see the rear view mirror automatic can move close and open ,it's move as open and closing the central lock door. If you close the central door lock it can move rear view mirror close and other wise. But the rear view mirror must have motor to can move it. you can make it with this circuit

car auto rear view mirror

Description :

S1 = output from open/close central door lock
S2 = output from open/close central door lock
D1 = 1N4007
D2 = 1N4007
C1 = 2200uf/35v
C2 = 2200uf/35v
RY1 = Relay SPDT
RY2 = Relay SPDT
M1 = Electric Rear View Mirror Motor

note: you can parallel from left to right rear view mirror
Enjoy it

Circuit designed in http://www.digikey.com/schemeit/

DIY Car Lamp/Lights Handle


This Project is fun and making usefull, if you search the car handle at night or no lights. Using 555 circuit to set trigger and reset, use the circuit 555 in this circuit , can make the light on handle turn on, you can connect the set trigger with + output  from central lock open motors, and reset just connect with + output central lock close. You must put the output from alarm system.

car handle DIY

And output you can use the flexible led stripe, or make driver to lamp up to 5w , or you can use Rellay. Enjoy !!

See also DIY Car Auto Rear View Mirror with alarm remote

Sunday, December 06, 2015

Temperature sensor IC LM56

Temperture sensor LLM56

This circuit uses IC circuit LM56 simple project you can use as a guide for your reference. IC LM56 has two output low. This IC components possess a variety of useful features in a case of the temperature sensor.