Home > Circuit BLOX > Blox Index
UPDATED:.21:24 13 February 2020
Circuit Blox are a development from CIRCUIT BRICKS used in the design stage of a circuit. These blox act like modular function blocks to develop circuits and refine their operation.
  • No frustrating faulty circuits, just connect as shown
  • Connect in a variety of combinations for a range of circuits
  • Ideal for ELECTRONICS and SYSTEMS & CONTROL
  • Can be used individually, or as part of other projects
  • Easy terminal block connection
  • Based upon common and classic circuit designs
  • Use them over again, easily reclaimed from old projects.

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BLOX INDEX
The range of Blox are shown below with connections and are in alphabetical order. Click on an image for details. There are 24 so far and more are being developed to add to the range soon - (D-type Flip-flop, Binary counter, Decade Counter). Details and ASSEMBLY INSTRUCTIONS for kits below.
ASTABLE

+V
Rst
FM
0V

+V
Vout
0V
Produces a stream of pulses
IN: Rst = Reset, stops operation when high.
IN: FM = Frequency modulation input.
+V = 5v to 15v

Ranges:
Lo: 0.7Hz - 18Hz
Mid: 31Hz - 850Hz
Hi: 700Hz - 18KHz
AUDIO/AC PRE-AMPLIFIER

+V
Vin
0V

+V
Vout
0V
Amplifies a small audio or AC voltage.
Gain approx: -40
+V = 3v to 18v
BARGRAPH LED DISPLAY

+V
Vin
0V
Lights LEDs representing the input voltage Vin.
Mode selects a dot or a bar type display

+V = 4.5v to 15v
COMPARATOR SWITCH

+V
Vin
0V

+V
Vout
0V		 Compares Vin to a reference voltage set by VR1
Whew Vin > Vref then Vout switches on.

+V = 6v to 18v
DARLINGTON DRIVER

+V
Vin
0V

+V
-Out
0V		 Driver for loads up to 3 Amps between +V and -Out
Switches on when Vin rises above 1.4 volts.

+V =< 50v
DIGIT COUNTER - SINGLE
+V
Clk
Rst
Cry
0V
Counts pulses on Clk input on a 7-segment display.
IN: Rst = Reset, counter zero when high,
IN: Cry = Carry, goes low when display = 9.

+V = 4.5v to 12v
DIGIT COUNTER - DUAL
+V
Clk
Cry
Rst
Lat
 0V
+V
Clk
-En
Rst
Lat
0V
 Counts pulses on Clk input on two 7-seg displays
Count increases synchronously.
IN: -En = Enable, stops the counter when high
IN: Rst = Reset, sets counter to zero when high
IN: Lat = Latch, freezes display when high

OUT: Cry = Carry out goes low when display = 99
+V = 4.5v to 12v
DIODE PUMP

+V
Vin
0V
+V
Vout
0V		 Outputs DC voltage proportional to the peak of
the AC input. VR1 alters speed of signal change

+V = 3v to 18v
FREQUENCY TO VOLTAGE CONVERTER

+V
Vin
0V
+V
Vout
0V		 Produces an output voltage proportional to the
input frequency on Vin.

+V = 6v to 24v

Ranges:
Lo = 3.7-13 V/KHz
Hi = 0.7-2.7 V/KHz
HEAT SENSOR

+V
Vout
0V
Produces an output voltage proportional to heat. Reverse power for coldness sensor.

+V = 3v to 18v
INFRA-RED RECEIVER

+V
#2
#1
0V		 Two outputs can be activated remotely using
Infra-Red. Up to 6 channels are addressable.
For use with IR Transmitter Blok.
+V = 5v to 12v

Channels:
Link A0 = Ch1 & 2
Link A1 = Ch3 & 4
No link = Ch5 & 6
INFRA-RED TRANSMITTER

+V
-#1
-#2
0V
Two outputs can be activated remotely using
Infra-Red. Up to 6 channels are addressable
Press buttons or take inputs -#1 or -#2 low
+V = 5v to 12v

Channels:
Link A0 = Ch1 & 2
Link A1 = Ch3 & 4
No link = Ch5 & 6
INVERTER

+V
Vin
0v

+v
Vout
0v
A transistor signal inverter, can also be used as
a low power driver (LED, buzzer etc)
OUT: Vout high if Vin < 0.7v, low if Vin >= 0.7v
+V = 3v to 18v
LATCH - Set/Reset

+V
Set
Rst
0V

+V
Vout
0V
A digital latch that can be set on or off.
IN: Set = Set input, active high
IN: Rst = Reset input, active high (overides Set)
+V = 4.5v to 15v
LIGHT SENSOR

+V
Vout
0V
Produces an output voltage proportional to light. Reverse power for darkness sensor.
+V = 3v to 18v
MICROPHONE AMPLIFIER

Mic+
Mic-
+V
Vout
0V		 Amplifies sound picked up by the microphone.
Gain set at -212. Output level set by VR1.
+V = 6v to 18v
MONOSTABLE

+V
-Trig
-Rst
0V
+V
Vout
0V
 Produces a high output pulse when triggered.
IN: -Trig = Trigger input, active low
IN: -Rst = Reset input, forces Vout low
+V = 4.5v to 18v

Ranges:
1: 0.2ms - 11ms
2: 0.05s - 2.5s
3: 2.4s - 112s
PIR DETECTOR

+V
Vout
0V
Detects heat changes up to 6-8 meters.
OUT: Vout active LOW when detection occurs

+V = 4.5v to 15v
RELAY & DRIVER - SPDT or POLARITY SWITCH

+V
Vin
0V


IN/nc
IN/no
O/cm
OUT		 SPDT relay switch using com, no and nc.
or
Direction switch for motors using IN/OUT
+V = 4.5v to 9v
SLOTTED OPTO SWITCH

+V
Vout
0V
A light beam used to detect movement passing it.
OUT: Vout = output high when beam interrupted
+V = 4.5v to 12v

+V
Vin
0V

+v
Vout
0v
Generates a brief pulse when triggered.
POL: + = Rising edge on Vin creates high pulse
POL: - = Falling edge on Vin creates low pulse
+V = 4.5v to 15v
TRIANGLE WAVE ASTABLE

+V
Vout
0V		 Generates a triangle wave output.

+V = 9v to 18v
ULTRASONIC ASTABLE

+V
-Rst
0V


Tx+

Tx-		 Generates an ultrasonic frequency for a transducer.
IN: -Rst = Reset active low, forces Vout low

+V = 4.5v to 15v
ULTRASONIC DETECTOR

Rx+

Rx-
+v
Vout
0v
Detects a change in an ultrasonic signal.
OUT: Vout goes LOW when change detected.
+V = 4.5v to 15v
HELP
If you get stuck generating the circuit, email us what you have completed so far and we will try to help you.

IMPORTANT NOTE: If you are using this for coursework you must declare any help you have been given!
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