Rongge

Receiver interference is hardly an unknown problem among model builders. Preventive measures in the form of ferrite beads fitted to servo cables are often seen in relatively large models and/or electrically driven models, to prevent the cables from acting as antennas and radiating interference to the receiver. If miniature ferrite beads are used for this purpose, the connector must be first be taken apart, after which the lead must be threaded through the bead (perhaps making several turns around the core) and then soldered back onto the connector. An interference source can also cause problems in the receiver via the power supply connection.  The battery is normally connected directly to the receiver, with the servos in turn being powered from the receiver. The servos can draw high currents when they operate, which means they can create a lot of noise on the supply line. This sort of interference can be kept under control by isolating the supply voltage for the receiver from the s...

Working of D.C Generator As explained before the D.C generator converts mechanical energy into electrical (D.C) energy. The generator is usually coupled to a prime-mover. The prime-mover may be a diesel/petrol engine, or a turbine depending upon the rating and application of the generator. The prime-mover converts some sort of energy (diesel/petrol/water/steam/gas etc.) into mechanical energy. This mechanical energy is supplied to the generator (i.e. generator input). Working of D.C Generator If the generator is very small for commercial purpose i.e. for a shop or small work shop or cinema etc. the prime-mover is a diesel engine. If the generator is very big like in power stations then the prime-mover will be a turbine. Again depending upon the resources the turbine may be a water turbine, steam turbine, gas turbine etc. When the prime-mover output is given to the generator, the generator armature starts rotating. Usually the poles on the yoke are made of permanent magnets. Therefore, ...

Interfacing Seven Segment (c.c) Display In this tutorial i will show you how to interface S.S display with PIC16F887/877. For this we required 74hc573 latches, 74hc238 decoder, and 74ls48 bcd2dec converter. Latches are used to enable/disable the S.S, 74hc234 a 3x8 decoder selects the appropriate latch to be enable/disable. 74ls48 just converts the bcd input to respective decimal output to operate S.S properly.  Now lets write a small program that display the digital manual input at S.S, enter by the user; by using 8-way dip switch. Code:    void main() {      int x,y,i,j;      trisc=0;      portc=0;      trisd=255;      //all bits for input  ///////////////// comment 4 pic16f877/////////      ansel=0;      anselh=0;           c1on_bit=0;      c2on_bit=0; ///////////...