2 from 1, 4001 

Taken: Mar 20, 2007

2 from 1, JP approach 

Taken: Mar 20, 2007

2 from 1, JP approach (corrected) 

Taken: Mar 20, 2007

2 pulses from 1 

Taken: Mar 20, 2007

2 pulses from 1 (#2) 

Taken: Mar 20, 2007

555 astable: 5 s H, 5 mins L 

Taken: Mar 20, 2007

555 auto switch off 

Taken: Mar 20, 2007

555 basic mono 1-5 mins 

Taken: Mar 20, 2007

555 delayed toggle (Gursh) 

Taken: Mar 20, 2007

555 delayed toggle (Gursh): waveforms 

Taken: Mar 20, 2007

555 simple astable: full details 

Taken: Mar 20, 2007

555 switches off burglar alarm 

Taken: Mar 20, 2007

567 detects > 500 ms 

Taken: Mar 20, 2007

567 tone decoder 

Taken: Mar 20, 2007

Automatic motor operation 

Taken: Mar 20, 2007

Brief +ve pulse after 10 s delay 

Taken: Mar 20, 2007

Brief +ve pulse after 10 s delay 

Taken: Mar 20, 2007

CM: transformer grounds 

Taken: Mar 20, 2007

CM relay #1 

Taken: Mar 20, 2007

CM transformers 

Taken: Mar 20, 2007

Curtain controller: logic & motor driver 

Taken: Mar 20, 2007

Curtain controller: mechanics 

Taken: Mar 20, 2007

Curtain controller: nicad charger 

Taken: Mar 20, 2007

Curtain controller: power supply 

Taken: Mar 20, 2007