On the switchboard garages, workshops and home labs often use the same sockets to connect consumers designed for high (220 V) and low (12V) voltage. The danger is the inclusion of 12-volt device in a 220-volt outlet.
To avoid this, I propose to modify the 12-volt plug as the most “risky” of an erroneous connection to the high voltage. All sorts of labels and tags eventually disappear. But if the single pin plugs somewhat shortened — it will be a constant visual reminder.
A. VINOGRADOV, Mogilev
Recommend to read
COMBO GENERATOR
To build and repair electronic equipment needs generators low and high frequencies. A simple device, a scheme which offers the British magazine "Radio Electronics Constructor", replace...
EKSPRESS-OPTIKA
"Bespectacled" they know that most victims are not glass and frame: breaks down on the bridge of his nose, bursts into tight spots. If no spare points, you can use a simple Express...
