Generation meter detector circuit component list

I am listing the CPC part numbers – no other reason than I listed Maplin last time, so it’s time to give another company an airing.

Power Supply

It is intended that the power supply for this circuit is taken from the +7.5V supply of the Owl Direction Circuit. However any DC voltage supply between 7 and 12V can be used.

Power Supply Connector CPC either AV15151, AV15145, AV15563 – depends on how you wish to position the socket

Transistors

Type Quantity CPC number Component

BC550 1 SC06715 Q1

BPW85 phototransistor SC08559

Diodes

Type Quantity CPC number Component

1N4148 1 SC07316 D1

LED

One required. Choose your colour

Colour CPC number Component

Red SC08041

Yellow SC11599 LED1

Green SC08042

Blue SC08060

Integrated Circuits

Type Quantity CPC number Component

7805 1 SC08325 U1

74HC123 1 SC08954 U2

74HC14 1 SC08941 U3

Capacitors

Value Quantity CPC number Component

10uF 16V 3 CA05684 C1, C2, C4

4.7uF 16V 1 CA05683 C3

Resistors

All fixed resistors are 0.25W or greater (CPC 0.25W range is ideal)

Value Quantity CPC number Component

470R 1 RE03756 R5

100k 3 RE03724 R1, R2, R4

1M 1 RE03725 R3

Potentiometer 1M 1 RE03279

Circuit Board

CPC strip board PC01416

Accessories

I would recommend using sockets for the ICs.

Type Quantity CPC number

16 pin 1 SC08118

14 pin 1 SC08117

Solder pins make ideal means of connecting wires to the circuit board. Maplin number FL24B for pack of 100. You’ll need up to 9.

Wire links. I use the wire cut off from the resistors after they have been soldered to the circuit board as the wire links.

Track cutter. I would recommend using the spot face cutter CPC PC01227