Timstar - Science

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.

High quality wire-wound controls, ideal for loudspeaker volume controls, miniature motor speed controllers, etc. Power rating: 5W; Resistance tolerance: ±20%; Spindle rotation: 300° ±5°; Max. operating voltage: 120V; Breakdown voltage: 200V. Body Dimensions (Dia. x D): 24 x 11mm. Spindle Dimensions (L x Dia.): 6.5 x 6 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

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 %

Nickel plated steel.Takes 4 mm plug. 10 max current.

For DC only with 4 mm terminals.

This analogue voltmeter, specifically designed for use by students, is sturdy instrument for measurement of both AC and DC voltage. The instrument comes with DC/AC switch and has three voltage ranges. Analogue meters can be more useful than digital meters for certain applications, and often provide more visually stable reading. This instrument is electronically protected against overload but must not be connected to voltages exceeding 30 V. • AC and DC ranges: 0-3 V; 0-15 V; 0-30 • Precision: 2 of full scale • Impedance: 10 kΩ/V • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

This analogue ammeter, specifically designed for use by students, is sturdy instrument for measurement of both AC and DC current. The instrument comes with DC/AC switch and has three current ranges. Analogue meters can be more useful than digital for certain applications, and often provide more visually stable reading. This instrument is electronically protected against overload and will tolerate overloads up to 15 for at least 10 seconds. • AC and DC ranges: 0-0.05 A; 0-0.5 A; 0-5 A • Precision: ±2 of full scale • Impedance: 10 kΩ/V • Max. voltage drop: DC: 0.25 V; AC: 0.27 V • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

This galvanometer, specifically designed for use by students, is sturdy but sensitive instrument for the measurement of small currents. The instrument has centre-zero scale and three current ranges and is electronically protected against overload, tolerating overloads of up to up to A for at least 10 seconds. • DC ranges: ± 5 mA; ± 500 μA; ±50 μA • Centre-zero scale • Precision: ± 5 % of full scale • Internal resistance: ± 5 mA: ca. Ω; ± 500 µA: ca. 90 Ω; ± 50 µA: ca. 900 Ω • Electronically protected against overload • Dimensions: 158 x 108 x 56 mm • Scale length: 72 mm

Moving coil DC milliammeters with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Scale length: 60 mm • Accuracy: ±2.5 % • Dimensions: 125 x 80 x 80 mm

Moving coil DC milliammeters with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Scale length: 60 mm • Accuracy: ±2.5 % • Dimensions: 125 x 80 x 80 mm

Economical analogue bench meters designed for education. Large, easy-to-read scales. Connection via 4 mm terminal posts. • Accuracy: 2.5 % • Dimensions: 100 x 133 x 97 mm

Economical analogue bench meters designed for education. Large, easy-to-read scales. Connection via 4 mm terminal posts. • Accuracy: 2.5 % • Dimensions: 100 x 133 x 97 mm

Moving coil DC microammeter with zero adjust, fully enclosed in robust housing, with clear acrylic front cover. • Range: 0-500 µA • Resolution: 10 µA • Scale length: 60 mm • Dimensions: 125 x 80 x 80 mm

Economic, robust digital meters, housed in sturdy ABS case with clear LCD screen. Input is via 4 mm sockets on the front panel, which features an on/off switch. Each meters requires a 9 V, PP3 battery (NOT included). Dimensions (W x D x H): 100 x 140 x 100 mm.

Economic, robust digital meters, housed in sturdy ABS case with clear LCD screen. Input is via 4 mm sockets on the front panel, which features an on/off switch. Each meters requires a 9 V, PP3 battery (NOT included). Dimensions (W x D x H): 100 x 140 x 100 mm.

Supplied in strong high grade ABS case with large bold LCD and 4 mm colour coded sockets. Powered by 1 x 9V PP3 Battery (supplied). Dimensions (L x W x H): 95 x 90 x 75mm.

Supplied in strong high grade ABS case with large bold LCD and 4 mm colour coded sockets. Powered by 1 x 9V PP3 Battery (supplied). Dimensions (L x W x H): 95 x 90 x 75mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This meter comes in a moulded plastic cases and features a 25 mm LCD. Input is via colour coded 4 mm sockets and the unit is short circuit and overload protected. Powered by a 9 PP3 battery (not supplied). Dimensions (L x W x D): 115 x 80 x 45 mm.

This updated USB version of the low voltage Joulemeter includes datalogging and an improved specification and can be used with or without computer. Designed to be simple enough to use at KS3, and flexible enough for more advanced use at KS4 and beyond, the Joulemeter simply requires an input supply and load to be plugged in (e.g. solar panel and motor) and the meter will display the values of the power and the energy transferred. For simplicity, the instrument automatically adjusts the display to show suitable units and an appropriate number of decimal places, so that it can deal with a very wide range of values (e.g. for energy, from 100 nanojoules up to 1.75 megajoules). This version of the Joulemeter functions almost identically to the previous version but in addition the meter also keeps a log at the chosen sample rate when the total energy transferred is being measured; the data can then be loaded on to PC using free mini-datalogger software. The function button allows any of four settings to be selected for the required quantity to be measured (energy and time; power; average power; voltage, current and power). • Current range: ±7 (current can flow in either direction) • Voltage range: ±25 V • Log memory: 2500 samples • Log sample period: 1, 2, or 4 seconds • Powered via USB or using the 5 V mains adaptor (included)

The MY60 is high quality, high-accuracy 3.5 digit multimeter offering excellent value for money. This meter has thirty two ranges, which cover measurement of AC and DC voltage, AC and DC current and resistance plus test positions for diodes and transistors. It also incorporates an audible continuity tester, large, clear LCD display and 'low battery' indicator which shows when the battery is exhausted. The meter is supplied with rubberised holster for protection, which has 2-height stand built in along with clips to hold the test probes. Designed in accordance with IEC-1010. Supplied complete with holster, test probes, PP3 battery and instruction manual. Weight: 310 g (including battery). Dimensions (D x W x H): 31.5 x 91 x 189 mm. Features: • 32 Ranges • Large LCD 3.5 digits • Auto power off • DC voltage: 200m/2/20/200V ±0.5%, 1000V ±0.8% • AC voltage: 200mV ±1.2%, 2/20/200V ±0.8%, 700V ±1.2% • DC current: 20µA ±2.0%, 200µA/2m/20mA ±0.8%, 200m/2A ±1.5%, 10A ±2.0% • AC current: 20µ/200m/2A ±1.8%, 2m/20mA ±1.0%, 10A ±3.0% • Resistance: 200/2k/20k/200k/2MΩ ±0.8%, 20MΩ ±1.0%, 200MΩ ±5.0% • Continuity checking with buzzer • Diode check: Test current 1.0mA, test voltage 2.8 • Power: PP3 (9V) 1 • hFE: ~ 1000 • Display: 30mm x 60mm LCD

An easy to use compact 3.5 digit LCD multimeter. Supplied with test leads, battery and boot. Dimensions (L x W x D): 162 x 86 x 33 mm. Features: • DC volts 200mV to 1kV • AC volts 200mV to 750V, • DC amps 20mA to 10A • Resistance 200Ω to 2MΩ • Diode Test • Continuity

Leads come ready assembled with moulded-on strain reliefs. BNC plug to crocodile clips.

Leads come ready assembled with moulded-on strain reliefs. BNC plug to stackable 4 mm plugs.

Leads come ready assembled with moulded-on strain reliefs. BNC plug to 4 mm sockets.

This multi-purpose microphone has been designed for a number of applications and experiments requiring the use and demonstration of audio input, including voice and music waveforms. The electret condenser type microphone is mounted in a moulded plastic box with two standard 4 mm output connectors, an on/off switch and a power indicator. • Electrical Supply: 9V PP3 battery (supplied) • Dimensions: 68 x 120 x 36 mm • Mass: 0.15 kg • Sensitivity: -42 db • Frequency Response: 20 Hz to 20 kHz • Output Impedance: 2.2 kohm

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

20 x 5 mm, 250 V AC. Supplied in packs of 10.

20 x 5 mm, 250 V AC. Supplied in packs of 10.

20 x 5 mm, 250 V AC. Supplied in packs of 10.

6.3 x 25.4 mm. 240 V AC. To BS 1362. Supplied in packs of 10.

20 x 5 mm. 250 V AC. Supplied in packs of 10.

Set of 10 leads, in five assorted colours. Terminated at each end with vinyl sleeved crocodile clip.

Vinyl covered crocodile clips, in packs of 20 (10 black and 10 red). Length 460 mm.

5kV lead.

5kV lead.

100 mm length of flexible wire covered in colour coded P.V.C. terminated at each end with 2 mm in-line stackable plug. Sold in packs of 5.

100 mm length of flexible wire covered in colour coded P.V.C. terminated at each end with 2 mm in-line stackable plug. Sold in packs of 5.

300 mm length of flexible wire covered in colour coded P.V.C. terminated at each end with 2 mm in-line stackable plug. Sold in packs of 5.

300 mm length of flexible wire covered in colour coded P.V.C. terminated at each end with 2 mm in-line stackable plug. Sold in packs of 5.

Extra flexible leads with 4 mm stackable plug at one end and standard crocodile clip at the other. Length: 300 mm. Supplied in packs of 5.

Extra flexible leads with 4 mm stackable plug at one end and standard crocodile clip at the other. Length: 300 mm. Supplied in packs of 5.