Components

Electric bell, comprising plastic case with removable cover, and (70 mm) metal plated gong. Runs off 4-6 V AC or DC, via flying mm plug-leads.

A higher quality, more reliable bell manufactured in the EU. Operates on 5-8 V.

Single tone output, panel mounting, transistor oscillator DC buzzer. • Voltage: 6 V • Rated current: 25 mA • Frequency: 400±100 Hz • Sound output: 70-75 dB 30 cm • 100 mm colour-coded leads

Packs of 10 low cost miniature buzzers. These come complete with flying leads and are ideal for educational projects and general purpose use. • Current: 30 mA • Dimensions (L x W x H): 23 x 17 x 15 mm • Fixing Centres: 27.5 mm • Lead Length: 80 mm

A general purpose low signal switching diode, this 1N4148 diode has an operating voltage of 75 V and current rating of 150 mA max.

DO-41 Plastic case, 1 A silicon rectifier diodes. 1 A/50 V.

Photoconductive cadmium sulphide light dependent resistor (LDR) in a miniature epoxy sealed open frame package (4 mm dia.). Cell resistance reduces as light falling on the device increases. Typical applications include light control, cameras, toys etc. Sold as pack of 10. • Peak spectral response: 540 nm. • Light resistance: 50-100 Kohm • Dark resistance: 20 Mohm minimum • Max. voltage: 100 V • Power max: 90 mW • Working temp. range: -20 to +60°

Photoconductive cadmium sulphide cell with a spectral response similar to the human eye. As light falling on the cell increases, so the resistance of the cell decreases. Peak spectral response: Typ. 550 nm. Cell resistance: 9 kΩ at 10 lux. 400 Ω at 1000 lux. Dark resistance: Min. 1 MΩ. Sold as pack of 5.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

High quality 5 mm LED indicators with diffused lens. Maximum voltage 3.0 V DC. PCB or panel mount. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Miniature, circular DC motors, ideal for models and educational applications. The MM10 version has flat side. RoHS compliant. Sold as pack of 10.

Ideal for projects, providing high power and low speed and designed to fit our MM28 type motors. The Perspex base incorporates holes for screw fixing if required. The assembly also includes precision worm and gearwheel, and 150 mm long 4 mm dia. output shaft. RoHS compliant. Motor not included.

6 W, 5 % tolerance wire-wound power resistors which have flame retardant coating, along with ceramic cores and metal alloy resistance wire, offering high resistance stability, excellent heat dissipation and low noise. Sold in packs of 10. • Power rating: 6 W • Resistance tolerance: ±5 % • Max. working voltage: 350 V • Temperature range: -55 °C to +155 °C • Dimensions: 24 x 8 mm

6 W, 5 % tolerance wire-wound power resistors which have flame retardant coating, along with ceramic cores and metal alloy resistance wire, offering high resistance stability, excellent heat dissipation and low noise. Sold in packs of 10. • Power rating: 6 W • Resistance tolerance: ±5 % • Max. working voltage: 350 V • Temperature range: -55 °C to +155 °C • Dimensions: 24 x 8 mm

A kit containing total of 1000 0.25W 5% carbon film resistors. Values ranging from 4.7Ω through to 10MΩ. total of 63 different values, this makes an ideal starter kit.

Miniature low cost push to make switch with red button. Sold in packs of 10.

Contact make-and-break switch (push to make) with sprung contact, mounted on an insulated base.

A mini toggle switcs, which is rugged and reliable. Complete with fittings for mounting. Rating: 1 A 250 V AC Contacts: Nickel plated brass. Panel cut-out: 7.0 mm.

30 Ohm NTC (Negative Temperature Coefficient) miniature disc thermistors, for general purpose applications such as temperature measurement and thermal compensation circuits. Also useful in the classroom for demonstrating how the resistance changes with temperature. thermistor is temperature dependant resistor or 'thermal resistor'. The thermistors are clearly coded. Sold in packs of 10. • Temperature range: -30 °C to +125 °C • Tolerance: 10 %

A simple to build festive project supplied with comprehensive instructions. Contents: • 16x 2.2 V 5 mm Red LEDs • 4x 100 R 0.25 W resistors • 4x 100 k 0.25 W resistors • 2x 10 uF capacitors • 2x 22 uF capacitors • 4x NPN transistors • 1x miniature slide switch • 1x PP3 battery clip • 1x PCB Requirements: • Soldering iron • Solder • ""Helping hands"" (optional) • ""Solder sucker"" (optional) • Cutters • PP3 battery

Spare magnet for EL81440 Motor Kit.

Plastic propellers (impellers), designed to push onto 2 mm diameter motor shafts.