555 ASTABLE
A 555 astable with variable adjustment. Three frequency ranges from 0.7Hz to 18KHz. Has RESET and FM control connections.
More details...CBB05: £5.68
AUDIO PRE-AMPLIFIER
A single transistor audio amplifier with a gain of -40. Wide supply voltage range 3v to 18v.
More details...SSB15: £3.29
LED BAR DISPLAY DVM
A digital voltmeter with a 10 LED green display. Can be confiured in dot mode or bar mode. Full range voltage can be adjusted down to 1.2 volts.
More details...CBB08: £5.99
COMPARATOR SWITCH
An analogue comparator switch with a variable reference control. Has the option for hysterisis setting to overcome chattering.
More details...CBB15: £5.99
DARLINGTON DRIVER
This Darlington transistor driver will switch loads up to 1.5 Amps at voltages from 3v to 30v.
More details...CBB18: £4.73
DIGIT COUNTER
A single digit counter using a red 0.7" 7-segment display. This will count square wave clock pulses up to 2MHz. Has a RESET and Carry Out.
More details...CBB20: £5.18
DUAL DIGIT COUNTER
A synchronous dual digit counter using 0.7" red 7-segment displays. This will count square wave clock pulses up to 2MHz. Has ENABLE, LATCH, RESET and Carry Out.
More details...DDB20: £8.49
DIODE PUMP
This circuit will convert rapidly changing AC or DC input signals to a relative output voltage that is proportional to the input.
More details...CBB22: £3.39
FREQUENCY-VOLTAGE CONVERTER
A converter that changes a square wave or sine wave frequency in to a proportional voltage. There are 3 ranges, the higher the input frequency, the higher the output voltage.
More details...CBB25: £5.79
HEAT SENSOR
A standard thermistor sensor in a potential divider circuit to generate an output voltage proprtional to the increase in heat. Can be reversed to produce a "cold" sensor. Includes preset adjustment.
More details...SBB23: £2.99
INFRA-RED RECEIVER
This infra-red reciever is used with the IR TRANSMITTER Blok and has 2 indiviual outputs. There is a 3 channel select option giving up to 6 outputs with 3 modules.
More details...CBB30: £5.99
INFRA-RED TRANSMITTER
This infra-red transmitter is used with the IR RECEIVER Blok and has 2 indiviual channels operated by push button. There is a 3 channel select option giving control to uo to 6 channels.
More details...CBB33: £5.99
SSB05: £2.59
CBB35: £4.61
LIGHT SENSOR
An LDR in a potential divider circuit produces an output voltage proportional to light. Can be reversed to increase voltage in darkness.
More details...SSB21: £2.99
MIC AMPLIFIER
This microphone and amplifier can amplify sound up to 2 volts peak. The output level is controlled using a preset.
More details...CBB38: £5.41
MONOSTABLE
A low triggered monstable based around the 555 IC timer. Has RESET and TRIGGER connections. Produces a timed output pulse from 0.2ms to 112 seconds over 3 ranges.
More details...CBB40: £5.69
PIR DETECTOR
A Passive Infra-Red detector than can react to heat sources up to 4m away. Output is a low pulse. (Module item appearance may alter from that shown.)
More details...CBB45: £5.99
PULSE GENERATOR
This can be configured to generate a high pulse on a high trigger, or a low pulse on a low trigger. The output pulse length can be varied from 0.19ms to 34ms.
More details...CBB55: £4.74
RELAY
A 6 volt relay with 3 Amp contacts that can be connected as a DPST switch, or wired as a polarity reverse switch for motor direction control.
More details...CBB48: £6.29
SLOTTED OPTO-SWITCH
An infra-red slotted switch that produces a high output pulse whenever the light beam is broken.
More details...SSB25: £3.19
TRIANGLE WAVE ASTABLE
A triangle wave astable that can produce AC and DC output, variable from 1.5Hz to 1.5KHz.
More details...CBB58: £4.99
ULTRASONIC ASTABLE
Generates a 40KHz square wave with adjustment for tuning to the Ultrasonic Detector Module.
More details...CBB60: £5.49
ULTRASONIC DETECTOR
Receives a 40KHz signal and reacts to any change in the signal from rebounds or echoes.
More details...CBB63: £5.99
CIRCUIT BLOX MULTIPACKS
STARTER PACK
A selection of the most common circuit blocks to create simple circuits.
More details...DPB11: £47.50
EXPLORER PACK
A wider range of circuit Blox with some duplicates for more complex circuits.
More details...DPB22: £99.95
ADVANCED PACK
A full range of circuit Blox with some duplicates for more advanced circuits.
More details...DPB32: £144.95