Wednesday, 22 April 2015

Circuit diagram for R/C

Circuit  symbols
A diagram of several inductors, connected end to end, with the same amount of current going through each
An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10−6H) to 1 H. Many inductors have a magnetic core made of iron or ferriteinside the coil, which serves to increase the magnetic field and thus the inductance. Along with capacitors and resistors, inductors are one of the three passive linear circuit elements that make up electric circuits. Inductors are widely used in alternating current(AC) electronic equipment, particularly in radio equipment. They are used to block AC while allowing DC to pass; inductors designed for this purpose are called chokes. They are also used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.
two horizontal lines with a gap where one line is at 45 degrees
Open Switch
two horizontal lines with a join in the centre
Closed Switch
a circle with an 'x' inside, attached to a horizontal line either side
Lamp
two 't' shapes head to head, one with a thicker top
Cell
three t-shapes, the one on left flipped to the right, the two on the right flipped 90 degrees to the left. the two on the right side have a thicker "top".
Battery
a circle with a 'V' in the centre. two horizontal lines come out from either side of the circle.
Voltmeter
a rectangle lying flat with two horizontal lines coming out of its sides
Resistor
a rectangle lying flat with one horizontal line running through the centre of it and out of both sides
Fuse
a circle with an 'A' in the centre with two horizontal lines coming out of the sides of the circle
Ammeter
a rectangle lying flat with an arrow running through it at a 45 degree angle. two horizontal lines run out of the sides of the rectangle
Variable resistor
a rectangle lying flat with two horizontal lines running out either side of it. A 45 degree line runs through the rectangle which bends at the bottom to run parallel with the base of the rectangle
Thermistor
a rectangle lying flat with two horizontal lines running out of either side. a circle runs around the rectangle, and two arrows point downwards at the rectangle, from the top left.
Light dependent resistor (LDR)
Circuit symbol for LED
Light emitting diode (LED)
Circuit symbol for diode

Diode
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Monday, 20 April 2015

Functions of components in RC cars

Describe the functions of the following for the RC car

Transmitter
Receiver
Arial
Servo Speed controller Motor
Gearbox
Stub axle 1/2 shaft
Differential
Damper
Ball joint

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Monday, 13 April 2015

Alternative parts for the G clamp

Students are to create a couple of paragraphs for the cast aluminium G frame and discuss making this in cast iron ... Why do we not do this ?
Secondly is thread rolling
Both need pictures / diagrams
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Wednesday, 18 March 2015

Catchup on the Diary of making and Alternative parts and constructtion

You need to ensure these two are completed as we are handing the work in on the last Thursday of this term. I am available after school and lunchtimes.

THERE IS NO EXTENSION ON THIS DATE
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Monday, 9 March 2015

Making Diary

Please update the diary for making. You have now completed several components and should hae these in your diary , times it took vrs planned time . Check and update
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Friday, 5 December 2014

revision

Look att motor drive trains and conttrrol systems for the skateboard
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Tuesday, 25 November 2014

Revision for exam

Look at metal properties and joining techniques
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