Independently Vary a Multivibrator's Duty Cycle and
Frequency : 10/28/02 Electronic Design - Ideas
for Design / When testing the response of many
pulse-width-modulated (PWM) systems, there's a need
to independently vary a multivibrator's frequency
and duty cycle. Such systems include dc motors,
ultrasonic hydrophones, and piezo-ceramic
transducers. The ...
Soft On / Off Switch: Modern electronic
equipment incorporates "push-to-on-push-to-off"
switches that do not make the clicking noise as with
old equipment. An example of this is the power
button on an ATX computer cabinet. Here is a circuit
that does the same. It can be used to turn on/off
any electronic/electrical equipment that operates on
any range of voltages. FAIR WARNING -- THIS SITE HAS
ANNOYING POP UP ADS.