The Alpha Electronics Kits have been designed to incorporate electronic applications into Physics lessons. The various boards offer versatility and cover a wide range of topics. Both student and teacher notes are included. Each kit is suitable for one student or lab group working from the student notes. Operational Amplifiers are common in many electronic devices. They amplify minute signals e.g. from a microphone to make them suitable for input to a power amplifier, or the signals from ECG sensors, to enable them to be displayed on a screen. This Alpha Operational Amplifier Kit gives students an understanding of operational amplifiers, including input impedance and feedback, gain, amplification of d.c. and a.c. signals, saturation, differential mode, the use of a bridge circuit to detect and amplify very small changes - this has applications in the creation of sensors such as strain gauges. When used with a microphone, an Alpha Power Amplifier and small loudspeaker, a two stage audio amplifier can be constructed. The manual (on CD) includes suggestions for extension work that involves discrete components and op amps, built on breadboard. The Kit includes:. 1 x Alpha amplifier investigations board. 2 x Alpha potential divider. 1 x Alpha 4.7k potentiometer panel. 1 x Alpha component holder panel. 1 x Alpha solder panel. 1 x Alpha 100 Ohm resistor panel. 2 x Alpha 1k resistor panel. 2 x Alpha 2.2k resistor panel. 4 x Alpha 10k resistor panel. 4 x Alpha 100k resistor panel. 1 x Alpha 5k variable resistor panel. 1 x Alpha 22k variable resistor panel. 2 x Alpha link panel. 1 x Alpha LDR panel. 1 x Alpha thermistor panel. 4 x Alphalink (yellow). 1 x Alpha OP AMP investigations manual (on CD).
