More about oscillator (542)

1-07-1988 | Repairs to the e.h.t. section of a monitor or a television receiver always carry a certain amount of risk. It makes sense, therefore, partic...

1-07-1988 | I ¬?I 1 I LOW-FREQUENCY LC OSCILLATOR It is not always appreciated that LC cir- cuits may be used for generating low frequencies. The propos...

1-07-1988 | A calibration generator is used for quickly checking receiver operation. The design shown here generates RF signals (markers) at 1 MHz inter...

1-07-1988 | I oI This oscillator supplies an output level between -10 dBm and +3 dBm, and can be tuned between 1250 MHz and 1800 MHz simply by varying t...

1-07-1988 | This circuit enables a computer to con- trol the power supplied to a mains oper- ated device (lamp, heater, drill, etc.) in 255 steps. Varia...

1-07-1988 | This simple multivibrator circuit is remarkable for its high efficiency and ability to drive relatively heavy loads. The circuit supplies a...

1-07-1988 | EE JULY/AUGUST 1988 05 This is one of the very few "one-armed bandits" to which the maxim the sole way to win is not to gamble is not ap- pl...

1-07-1988 | 05 Currently, 48 MHz quartz crystals are widely available at relatively low cost thanks to their use in computer systems. In these, there is...

1-07-1988 | EE JULY/AUGUST 1988 05 This electronic version of the reversible 5V sand-glass uses a set of LEDs to simulate the passing of sand grains fro...

1-07-1988 | This negative voltage converter differs from a host of other designs in not being set up around the latest integrated cir- cuit. The circuit...