| Whilst developing a simple scanning receiver, a need occurred for a ramp generator to provide a varying voltage to apply to the varicap d...
R. G. Evans (5)
| Having a recent arrival in the family meant that some form of baby alarm or monitor was required if 'junior' was not to 'wah' unduly in h...
| When a bicycle speedometer must be rugged, accurate and, above alt novel and a Iittle unusual, the 'high-rech' computerized LeD units fou...
| Ever since I made my first circuit (a crystal radio) some twenty years ago, I have faced the problem of packaging the finished circuit. T...
| This little circuit provides both a visual and an audible indicaticn that a message has been left. CMOS inverters Iela and IClb form a t...