Projects and Subsystems

Project Subsystem Components and Circuits
Project Name + Links		Main Featured Subsystem + Links		Key Project Components Used	Subsystems Used
1	Light to Voltage Converter	IP1	Potential Dividers / Sensors	ORP12 - L.D.R.,Variable Resistor	IP1, OP1
2	Investigating Switches	IP2	Switch Triggers (+ going)	Reed.Tilt, Micro, Push to Make Switch	IP2, OP1
3	L.E.D. Control	IP3	Switch Triggers (- going)	L.E.D., Resistor	IP3, OP1
4	Touch Sensing	P1	Transistor Switch	Transistors BC548B (BC108) npn	IP1, P1, OP1
5	Seeing in the Dark	P2	Darlington Pair	Transistors BFY51, BC548B npn	IP1, P2, OP1
6	Timer / Delay	P3	Resistor / Capacitor Timer	Capacitors, Variable Resistor	IP2, P3, P6, OP1
7	Theft Alarm	P4	Latch	Thyristor SCR106	IP1, P4, OP1
8	"Keep Cool" Fan	P5	Output Buffer / Driver	Transistor BFY51 npn	IP1, P6, P5, OP2, OP1
9	Moisture Detecting	P6	Op Amp - Comparator Circuit	Operational Amplifier 3140 (IC)	IP1, P6, OP1
10	Tone Generator	P7	Astable/Clock	555 Timer Integrated Circuit (IC)	IP2, P7, OP1
11	Movement Limiter	P8	Monostable	555 Timer Integrated Circuit (IC)	IP3 ,P8, P5, OP2, OP1
12	Dual Alert Warning	OP1	Sourcing/Sinking Outputs	Sourced LED, Sinked Buzzer	IP2, P7, OP1
13	Interactive Display	OP2	Inductive & low V Outputs	Diode, Capacitor, Low V. Motor	IP1, P2, OP2
14	Safety System	OP3	Relay Driven Outputs	Relay, LDR, Low V. Motor	IP1, OP2, IP3 , P2, OP3

Select a project (or main featured subsystem), to investigate the system, circuits or components used.