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Archive for March, 2012

Crystal oscillator using TTL

March 31, 2012 by

This are simple and cheap crystal oscillator circuit, that we use a few parts comprises a TTL digital number SN7404 (Package contains six inverters), four resistors and a crystal.
The tree inverters gate are biased into their linear regions by R1 to R4, and the crystal provides the feedback. read more

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5V power supply

March 15, 2012 by

Top Linear power supply regulator 5V 5A with 7812 and LM723
This ciruit Top Linear power supply 5V voltage regulator 5A. It is good power supply circuit than IC 7805+MJ2955( regulator 5V 5A ) . Use IC 7812 and LM723 regulator IC, Thansistor TIP142 for boost current to 8A max. P1 for Control Volt output 2.5-7V,Transformer 10A min. Detail other see in picture citcuit. Related Links

7805+Mj2955 power supply 5V 5A for digital circuit.
This is circuit dc regulator power supply 5V at current 5A, I used it for my digital production. The mian part electronics is IC-7805 and MJ2955 transistor . You must use the the 9VAC 5A transformer. Circuit power supply 5V 5A by 7805+Mj2955 PCB Power supply 5V 5A by 7805+Mj2955 Source: 79 Electron circuit Related

Regulator 5V 3A by IC LA5105
This is circuit Regulator 5V 3A by IC LA5105. (easy circuit) To use transformer 4A. IC to Hold Heatsink. For Digital circuit. circuit Regulator 5V 3A by IC LA5105 PCB Regulator 5V 3A by IC LA5105 Source: PK kit Circuit book Related Links All circuits of 5 Volt Regulator All circuits of 5v power supply

source: 5V power supply

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low voltage battery detectors

March 14, 2012 by

This circuit can use with power supply since 5 volt until 25 Volt. When voltage of power supply or battery agree come to lower location level keeps. It make LED bright show know. Although the circuit this use how many is the equipment not, but there is the stability and accurate in good moderately work. Because of use IC Voltage Detector 8211 that bring build be Voltage Comparator Circuit. Which have Voltage Comparator at certainly stay within the integrated circuit. Read more and view circuit diagram

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build led vu meter

March 14, 2012 by

Led light based music stereo with multi system
This circuit is another name for the VU meter. which often have a lot of equipment. Cause problems for people who start training. But this cycle is not much equipment. You can also choose, in the. Running a bar or run with a point. Operation of the circuit. It is the primary device IC number

VU meter 10 pieces using ic LM3914
VU meter circuit is an IC number LM3914. This is a circuit that is commonly used standards. Within the integrated circuit LM3914 is a voltage range advantage. This is the fourth leg split. Reference voltage pin 6 is low, and the reference voltage divided up. When raising the power supply circuit and the signal came,

LED VU Meter by IC LM3914
This is Circuit LM3914 LED VU Meter. use IC LM3914 and Transistor BC109C. For Display power Music by LED This be LED VU Meter by IC LM3914 circuit show with LED convenient for the stereo or sound all signal. This easy circuit again because use IC LM3914 show get 10 the level. Build easy because

Then, you can be see other circuits : VU Meter circuits : Led vu meter : Build led vu meter

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Inverter circuit diagram

March 13, 2012 by

100w transistor inverter circuit diagram
This is transistor inverter circuit diagram 100watt it sizes are easy circuit. Because of use the all transistor, have no the integrated circuit. It performs to modify from battery 12V be 220V 50Hz signal square wave. By the circuit works with transistor BC558 x 2pcs and RC assemble the circuit produces 100HZ frequency from that

DC12V to AC Volt Inverter by IC 4069 and Mosfet
My friend whant circuit inverter Easy.. easy, I see to This site many good circuit . Source : http://www.hobby-elec.org/e_ckt30.htm On this page, I will explain DC/AC invertor with center-tapless transformer. As for the DC/AC invertor with center-tap transformer, refer to “DC/AC invertor (1)”. The invertor that I made this time uses power MOS FET as

12 Volt to 220 Volt Inverter 500W
This is circuit Inverter 12VDC to 220V 50Hz 500W. It easy to make and Low cost. Source: leksound project Related Links Inverter circuit diagram 12Vdc to 220Vac inverter 2N3055 Power Inverter High power inverter circuit More about 500watt inverter circuit Inverter 100W by IC 4047 + 2N3055 (with PCB) Inverter 12V to 220V 300W by

be about like:Inverter circuit diagram : AC inverter schematic :: 2N3055 inverter circuit

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