What Must todo

This source uses LEDs and an astable oscillator to control the switch, duty-cycle, and effective IR illumination output.

 Circuit Diagram

Here are some tips you need to note:

1. Pick of the power that suits your needs. For personal use such as exercise, etc., is sufficient to choose an amplifier with a power of 15-20 watts. In most small power amplifiers are already available facilities such as Head Phone jack (eg Guitar Amplifier Laser 20) which is very useful especially for young people who have a habit of playing music until midnight. By leveraging these channels to Head Phone, then secured another household or neighbors will not be disturbed our music sound. Sound good hasilnya.Apabila amplifier system we will use to train together in a full band with drums, etc., then you should choose a larger power amplifier that is 70 watts or above. Thus the sound produced from the amplifier and sound system will not be drowned by the sound of pounding and pounding beat Drum.Untuk use on stage, you will need a higher power that is at least 125 watts or more, because this amplifier will be able to once we use as a monitor of musical instruments were playing.

2. Choose the facilities we need. Do not buy amplifiers which have facilities that we do not really need when it is increasing the price we pay. Unless the same price we can get better facilities, there is no harm in our selection.

3. Choose a good quality amplifier. If we need an amplifier to your keyboard, then it is advisable to select an amplifier that does not change the color of the original sound generated by the keyboard musical instrument they will be (flat). There are many amplifiers that produce different sounds from the original sound, if this happens there will be other voices that would reduce the original character of the actual sound produced by the keyboard because of the addition or subtraction of a particular frequency. Usually this happens at a very low frequency (low bass) or very high frequency (high treble). (Try the sound system rental, sound rental service) For amplifiers Electric Guitar and Electric Bass this (flat characteristic) does not apply because it specifically for these two types of instruments are required specificity of character frequency. Basically for Electric Guitar amplifier output is not needed for low frequency and high. For Electric Bass needed a low frequency, but not required a high frequency. We can learn from the rental place and the sound system rental-quality musical instrument.

4. Model and performance amplifier can be considered final. The desired model will depend on individual taste. A good model according to a person, not necessarily a good thing according to those who lainnya.Pada most professional musicians model will be the last option or not too overlooked. They will be more concerned with the quality and facilities of the amplifier. Maybe we can find also in the rental services professional sound and musical instrument rental place bagus.Demikian brief tips on choosing an amplifier, hopefully this can help to determine the right choice before you buy an amplifier and produce sound quality music is also of course .

Tips for Choosing Quality Amplifier

1. Pick of the power to suit your sound system. For personal use such as exercise is sufficient to choose an amplifier with 1-20watt power. In most electronic devices / small power amplifiers are already available facilities such as head phone jack (eg laser20 guitar amplifier) ​​is very useful especially for young people who have a habit of playing music until midnight. By leveraging the channel for these headphones, then secured another household or neighbors will not be disturbed "attraction" we. If the amplifier sound system we will use to train together in a group full band * with drum and band instrument, then you should choose a power amplifier 70watt or above. Thus the sound produced from the amplifier will not be drowned by the sound of pounding and pounding drum beats. For use on stage, you will require more resources than most, namely at least 125watt or more, because this amplifier will be at the same we use as a monitor of musical instruments were playing.

2. Select the facilities we need. Do not buy a multimedia system / amplifier that has the facilities that we do not really need, if it is increasing the price we pay. Unless the same price we can get better facilities, there is no harm in our selection.

3. Choose a good quality amplifier. If we need an amplifier to your keyboard, then it is advisable to select an amplifier that does not change the original color generated by the keyboard (flat). There are many Indonesian musical instrument amplifier that produces a different sound from the original sound, if this happens there will be other voices that would reduce the original character of the actual sound produced by the keyboard because of the addition or subtraction of a certain frequency speaker system. Usually this happens at a very low frequency. (Low bass) or very high frequency (high treble). To Lighting System, Electric Amplifier Electric Bass Guitar and this (flat characteristic) does not apply because it specifically for these two types of instruments required specificity of character frequency. Basically for Electric Guitar not dipelukan amplifier output for low frequencies and high. For Electric Bass needed a low frequency, but not required a high frequency.

4. Models and appearance can be thought being given to the last amplifier. The desired model will depend on individual taste. A good model according to a person not necessarily a good thing by other people.

In most professional musicians, models will be the last option or not too overlooked. They will be more concerned with the quality and features of the amplifiers for musical instruments. But if you are confused, you could just rent equipment or hire sound system rental equipment.

Synchronization circuit to make the signals useful in the process of scanning of the transmitter and sent to the Vertical and Horizontal. To be able to produce images on the picture tube phosphor surface is the same as what was sent, then the necessary adjustments to correct with ualsan which has decomposed on the sender and receiver on the review must be made ​​again, and this is called synchronization.

Click to view larger

On TV transmitter switching pulses that have made ​​the same frequency as in the reviewing, and by using the switching pulse is then mulapenguilasan point getter on the tube and picture tube can be adjusted simultaneously. 

At the transmitter, each end of the line reviews one pulse is emitted horizontally, and also at each end of the line vertical review (this is called a field review), another pulse is emitted. At the receiver using switching pulses had the time of the beginning (start) review can be arranged horizontally and vertically. Switching pulses are called the horizontal synchronizing signal and vertical synchronization. Vertical Synchronization A. Vertical in the tv series has the following functions a) bend / open beams of light (information) to the vertical direction. b) Synchronize files from a transmitter in the form of images with short time.

Amplifier circuit is very suitable to be used or applied in a narrow space such as in cars and so forth. Voltage amplifier is needed starting from 9 Volts to 17 Volts maximum. This amplifier circuit uses IC MPC575C, andsimilarities NEC575 . Power output is relatively very small, only 2 Watts.

This circuit is called DC TO DC converter circuit.Which increase the voltage circuit.There can be customized to change the output values. When the power supply input to IC1 is the output pin 3 at a frequency of 1 kHz.The frequency is Q1 and Q2, which will continue to use push pool work interchangeably.If this is the positive output signal Q1 Q2 will run the delete function this reason, C2 and C3 capacitors are half-wave alternating.When to use. Voltage from C2 to C3 is discharged out to the input voltage over almost two times less than 2 times due to the loss of diodes D1-D3.

The schematic above can be used for supply on color TV for all type TV circuit. But we need to know how much voltage needed by the circuit of color Television. To set the output voltage, the setting on VR1 1K ohm. Required input voltage 300V DC which is already on TV circuit, so we just take a 300V dc voltage existing on the TV circuit, and for a circuit supply voltage on our TV cut the line PCB and connected with this  universal switching power supply.For the transformer we can use the TV regulator transformer.

Part List :

• R1 = 33R 5W
• R2 = 330R 1W
• R3 = 2K2
• R4 = 47K
• R5 = 2K7
• R6 = 22K
• R7 = 390K
• R8 = 47R 1W

• C1 = 100uF 25V
• C2 = 1n2 2KV
• C3 = 18n
• C4 = 18n

• D1 = 1N4148
• D2 = 1N4148
• D3 = ZD 12V
• D4 = 1N4007
• D5 = 1N4007

• VR1 = 1K
• ZD1 = Zener 6V
• T1    = TV regulator transformer
• Q1   = K2847
• Q2   = C2328A

Lamp type LED has several advantages compared with the usual light when the applied on a motorcycle. In addition to more efficient battery when compared with normal hologen lamps, LED also has several other advantages, such as light more evenly and provide a luxurious feel to the vehicle.

The following are examples of simple creations that you can apply to decorate your motorcycle using the LED.

For this circuit is recommended only as a replacement motorcycle brake lights or city lights with the electrical source from the battery. Indeed in the market has many available variations of LED lights that can be used as brake lights or disco lights, but maybe some people would be proud if his own creative, hopefully circuit schemes that we present above can assist you in creating.

USB Battery Charger For Lithium Ion battery with the LM3622 is a series of lithium ion battery charger. This charger circuit operates using power from the USB source PC.


Current consumption of a series of USB Battery Charger For Lithium Ion battery with 400mA LM3622 is limited by R1, so it does not exceed the current maximum limit that can be given by a USB computer. Brains from USB Battery Charger For Lithium Ion battery with IC LM3622 , it is a national of having special technical specification charger for lithium ion batteries.

USB Battery Charger For Lithium Ion battery with the LM3622 is a series of lithium ion battery charger. This charger circuit operates using power from the USB source PC.


Current consumption of a series of USB Battery Charger For Lithium Ion battery with 400mA LM3622 is limited by R1, so it does not exceed the current maximum limit that can be given by a USB computer. Brains from USB Battery Charger For Lithium Ion battery with IC LM3622 , it is a national of having special technical specification charger for lithium ion batteries.