Mutchus

This motor stepper driver electronic project is designed using the PBL3717 motor driver manufactured by ST Microelectronics . The PBL3717A motor stepper driveris a monolithic IC which controls and drives one phase of a bipolar stepper motor with chopper control of the phase current. Current levels may be selected in three steps by means of two logic inputs which select one of three current comparators. PBL3717A Motor Stepper Driver Circuit Diagram When both of these inputs are high the device is disabled. A separate logic input controls the direction of current flow. A monostable, programmed by an external RC network, sets the current decay time. The output current for this project is up to 1A from 10 up to 46 volt motor supply . The logic inputs I0 and I1 set at three different levels the amplitude of the current flowing in the motor winding . A high level on the "PHASE" logic input sets the direction of that current from output A to output B and a low level from output B to...

The LM3410 IC is a constant current LED driver useful in either boost con-verter or SEPIC design applications. A SEPIC (Single Ended Primary Induct-ance Conver ter) design allows the power supply’s output voltage to be set above, below or equal to its input voltage. In this application the chip is configured as a boost-converter (i.e. the output voltage is greater than the input voltage).  LM3410 LED Driver Circuit Diagram . The LM3410 is available in two fixed-frequency variants. Using either the 525 kHz or 1.6 MHz clock version it is possi-ble to build a ver y compact LED driver. The output stage can supply up to 2.8 A, allowing several high-power LED s to be driven from a rechargeable Lithium cell or several 1.5 V bat-teries. The chip also features a dimmer input giving simple PWM brightness control.Output current is defined by an external shunt resistor. To keep losses low the LM3410 uses an internal voltage reference of just 190 mV. Power dissipation in the shunt resistor...

STK6153 production and use STK3048A amplifier, you reported to have introduced a lot, of which there are many improving circuit, but limited to the STK6153 performance, making the sets of combination play to the top circuit performance is not necessarily the broad masses of Shao You can meet the requirements. In this paper, STK3048A for voltage amplification, Coupled with ultra-dynamic bias circuit at the end of the production of a super-A amplifier. Power Amplifier Using STK3048A Circuit Schematic   Below the production elements and brief debugging. Transistor matching error should be 5 percent, the midpoint of migration can be controlled in less than 10 mV. Heat sink should try to get some large, to ensure the safety of power, the general weight of not less than 1,2 kg (two channels), if conditions allow the best and a small 12 V equipment Low Noise fans, for a mandatory cooling. Map k Ω resistance are blocked 0,5 W, Ω block resistance are 1 W, 0,22 Ω resistor is optional 5 W whi...

A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp driver that does not require any special components. I finally found one in Electronics Now. Here it is. It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments. 12 VDC Fluorescent Lamp Driver Circuit Digram Notes Q1 must be installed on a heat sink. A 240V to 10V transformer will work better then the one in the parts list.  The problem is that they are hard to find.This circuit can give a nasty (but not too dangerous) shock. Be careful around the output leads. Parts Part Total Qty. Description Substitutions C1 1 100uf 25V Electrolytic Capacitor C2,C3 2 0.01uf 25V Ceramic Disc Capacitor C4 1 0.01uf 1KV Ceramic Disc Capacitor R1 1 1K 1/4W Resistor R2 1 2.7K 1/4W Resistor Q1 1 IRF510 MOSFET U1 1 TLC555 Timer IC T1 1 6V 300mA Transformer L...