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TDA2007 Amplifier Circuit ,  this is stereo power amplifier with power output 2 x 12Watts . Minimum voltage require 8 volts and maximum voltage require 26 volts , with DC supply voltage. Impedance output is 8 ohms. See schematic diagram below :

This Power Pulse Using by LM350 and NE555 Circuit Diagram can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power .The LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This circuit requires 5-15V power supply. Power Pulse Using by LM350 and NE555 Circuit Diagram  

This low power transceiver circuit project is designed using the ADF7242 fully integrated low-cost, short-range, low power transceiver designed for operation in the global 2.4 GHz ISM band.The receive path of the ADF7242 low power transceiver circuit is based on a zero-IF architecture enabling high blocking and selectivity performance. The transmit path is based on a direct closed loop VCO modulation scheme. The ADF7242 has a low consumption power that make it suitable for battery powered systems. Low Power Transceiver Circuit diagram The ADF7242 supports IEEE 802.15.4 compliant DSSS-OQPSK modulation with a bitrate of 250 kbps and also supports FSK and GFSK modulation with bitrates from 62.5 kbps to 2 Mbps.ADF7242 fully supports arbitrary data rates only for FSK mode of operation. The ADF7242 also has a built in battery monitor features that has a very low power consumption and may be used in parallel with any mode of operation, except SLEEP state. The battery monitor generates a batte...

This is another situation that requires the overhead crane to rest for a while  upon reaching both of the rail. After a pre-determine time the overhead crane  will re-start in the opposite direction. Control circuit of "Delay Automatic Forward Reverse Motor of an Overhead Crane" The control circuit of this system is shown Above. Two times TR1 and TR2 are connected to the limit switches Y and X respectively at terminal 3. The terminal no. 1 of the instantaneous contacts TR1(1-3) and TR2(1-3) are connected to the terminals no. 3 of the limit switch Y and X respectively. The delay contact TR1(6-8) and TR2(6-8) are connected to the contacts R(13-14) and F(13-14) respectively. Supposing the overhead crane is moving in the forward (right) direction that means, contactor F(A-B) is at energized and contactor R(A-b) is at de-energize condition. When the overhead crane reaches the right end limit and touches the limit switch Y, the contact Y(1-2) of limit switch Y will open to de-energ...

This circuit is a 5v to 12 DC-DC step-up converter circuit which is specially ideal for the usb powered applications. A usb has two current supply modes.Before deecting the connected device the maximum supplies is 100mA to the load.when recognizing device its increases the output current up to 500mA.the controller (LT1618) also provides two input currents modes 100mA and 500mA which is selected by the user. Output currents are limited due to the increased potential difference at the output. When the demand of the load increases, output voltage will start to decrease. For example, if the circuit operates in the 100 mA input mode, when the load is 35 mA, the output voltage will be kept at 12V. But if the load increases to 50 mA, output voltage will reduce to 8V to maintain the constant 100 mA input current.

This circuit is 100 watt power inverter using power transistor 2N3055 . It is designed for you that need to use appliances at outdoor or no electrical places. Someone use it in car or the high mountain etc. The maximum output power of this circuit about 100 watts, it is suitable for a normal lighting (all home lamps), also used for radio, mini TV, stereo or someone use it for   How it works   From the schematic diagram in Figure 1 this circuit will include of 4 main section are: 1. The transistors Q1,Q2 act as the frequency oscillator circuit. 2. Both transistors Q3,Q4 act as the frequency divider circuit 3. The Q5,Q6 act as the driver circuit. 4. The Q7,Q8 act as the output circuit. Let’s look at to both transistors Q1,Q2 will be connected together as the astable multivibrator form. It will generate the output frequency about 100 Hz at the collector lead of Q2. Then this signal will sent to the two frequency divider makes the frequency is reduced down about 50Hz Cau...

TDA2007 Amplifier Circuit ,  this is stereo power amplifier with power output 2 x 12Watts . Minimum voltage require 8 volts and maximum voltage require 26 volts , with DC supply voltage. Impedance output is 8 ohms. See schematic diagram below :