use your TV receiver as a monitor - with this versatile amplifier

use your TV-receiver as a monitor... elektor november 1984 from an idea by C.G. Mangold ...with this versatile amplifier Figure 1. This is how an isolating transformer is connected. In most cases it may be fitted near the mains on/off switch in the TV set. Most television receivers cannot be con- trolled by an external video signal: only those fitted with an A/V (audio/video) or SCART connector (see Elektor, September 1984, page 9-52) can. Right from the outset we must tell you that if your television receiver is not fitted with an isolating mains transformer (the most likely case), it should be as a first priority. An isolating transformer can be installed in most sets immediately after the mains on/off switch (see figure 1). A second prerequisite is a full circuit diagram of the TV receiver: without that you cannot proceed. Many sets are pro- vided with one nowadays, but if you have none, you should be able to get it from your local dealer or the manufacturer"s service/spares de...